A/N: I do not own YuGiOh or DragonBallZ. Obviously, this is a crossover although I focus more on the YGO world. I wanted to write a story in which two of my favorite anime little brothers, Mokuba Kaiba and Son Goten, are the main characters. I hope you enjoy it. '...thoughts...'

This is ridiculous. I don't even know what I'm building. And I never construct something without knowing what it could do. But I have no choice. They're forcing me to, these abnormal-looking people. If I don't obey their wishes, my little brother will pay for my disobedience and I cannot let that happen. Ever.

It's a good thing Mokuba doesn't know what I'm doing. As far as he is concerned, it's just another day in the summertime and I'm just doing my other work: inventing. The company is fine now but I don't know how long that will last. They want me to build weapons and machinery using their blueprints. Probably some kind of super-weapon. Their attitude and purpose it typical and similar to those of a madman except their using me to do their dirty work. They say it is because I am a genius, which I don't deny, but I hate using my abilities for something I am strictly against: control of the entire world.

I will never understand that strange desire for world domination. Have they ever stopped and wondered what they would do with the world at their feet? They won't be satisfied; no one ever is. Every living thing has unlimited demands and no matter how hard they try, they will never find satisfaction in such things. Nevertheless, I am powerless at the moment to stop them and will continue to carry out their orders. For Mokuba's sake and for my life. I'd be lying if I said I wasn't concerned for my own life as well. There are those who say they want to end it all but they don't realize how much they want to live until it's too late. I want to keep on living for as long as I can to protect my brother and guide him, as he grows older. But if it comes to a decision where I have to choose between my life and Mokuba's, I think it is obvious what I will do. He still has so much more to live for. His innocence hasn't been demolished completely like mine has. I know the harsh reality in which we live in and I want Mokuba to live life to the fullest. It is too late for me.

I'm being forced to work under gunpoint. They have cameras and all sorts of things planted inside the mansion and my lab. My every move is being watched. This had better be all they want me to create. I'm almost finished and I still haven't figured it out just what it is I have assembled together, more or less. Among the things I have created, I have also been able to construct a radar that alerts me of the presence of them. It maintains a steady beep until they come within thirty-foot radius of Mokuba or myself. If they are within that radius, the radar immediately sends out a frequent series of beeps like that of a hospital where a patient may have passed on. It's come in handy quite a few times and I am able to prepare myself for them and shut it off so they won't suspect anything. Luckily, it isn't that loud.

Finally, it is completed. It is some sort of...super-gun and what it will shoot out, I do not know. I carefully inspect it, pondering over what it could be and what it can accomplish. Suddenly a door opens and I turn around quickly, my fingers accidentally slip on the power button. To my horror, I realize it is Mokuba who now stares at me with a look of terror as the machine starts up with an eerie noise. "Mokuba, get out of the way!" I frantically search for the 'off' button but my attempts are in vain. Several yellow beams shoot out in a circular shape and Mokuba had not yet gotten out of the way. The beams hit him dead on and he collapses to the floor.

"NO!" I dropped the gun and ran to his side, praying and hoping he was still alive. He is but...barely? "No, stay with me!" I held him close to my chest, and his eyes slowly flutter open. I looked over his body to make sure there was no blood or anything else. He looked perfectly fine.

"Seto?" His voice is hoarse. "What happened?" I shook my head in response when I hear another voice.

"Bring that machine to me." It's them.

I bring my head up unhurriedly, furious at them. "What have you designed?" I demand in an icy tone. "What have you forced me to create?!" I screamed. With Mokuba in my arms, I went to the machine and kicked at the wall with all my strength. To my surprise and their disbelief, I have managed to destroy it with one kick.

"Grr..." One of them immediately brought out a handgun and pointed it not at me but directly at my brother's head; I could tell. "You will come with us and rebuild it. And you will also design and construct more machinery for our convenience! If you fail to comply, you and your brother will surely die a slow death." So it must be some sort of weapon that can stun. If it was a real gun, they could kill us in an instant but then it would ruin their chances of killing us slowly.

I snarled at them and carefully placed my brother on the floor. "I will only come without resisting if you let me leave my little brother here." I said in an even tone.

They stare at me for a few seconds and then whisper among themselves. Then, "Agreed but you must do whatever we say." I nod and come to conclusion that I may never see him again. Sadly, I look at Mokuba one last time.

"Seto, what's going?" He asks, opening his eyes again.

"I'm sorry, Mokuba..." I can feel tears gathering, forming in my eyes but I refuse to show them that I am weak. "I love you, little brother. Stay strong." I closed my eyes, took a deep breath, and then followed them.

"Seto..." I looked back seeing a hand lift up but then it fell to the floor, limp, and I believe he blacked out again. I hope I made the right decision. I trust Yugi Muto and his friends will find my brother or he will find them. They had better take good care of Mokuba.

I'm surprised they didn't hear or detect my radar.

Mokuba sat up with a groan and rubbed his eyes. "Ow, my head." He moaned and reached back and touched his long raven hair tenderly, expecting a bump or some kind of wound to be there. Nothing. The now eleven-year-old boy was fine. Just a bit dazed. "Wha-what happened?" He muttered and unsteadily got to his feet. His vision was a bit blurry and the room was spinning slightly. Mokuba reached out to the wall to steady himself as he began to swim in a swirl of pale yellow. "What's going on? What's wrong with me?" Mokuba shut his eyes and shook his head. With his free hand, he rubbed his eyes once more and slowly opened them. Everything was clear and his dark eyes now laid themselves upon the lab of Seto Kaiba. There were mechanical parts and other tools lying around. The place was a mess, especially in one part of the room where was must have been a new project, there was now a pile of scrap heap.

Mokuba frowned and his eyes swept over the room. Suddenly everything came back to him in a flash. A flood of memories filled his mind and he remembered what had happened in here. "Seto!" He cried out, his youthful voice echoed in the room, bouncing off the silvery walls. He recalled voices, strange unfamiliar voices that spoke in monotone. They sounded male for there were no feminine tones to them. Just dull, uninterested voices giving orders to his older brother. And they did not sound friendly at all. "He's gone." Mokuba whispered, realizing what exactly had happened. In fact, the last words he had heard from Seto...

"I'm sorry, Mokuba...I love you, little brother. Stay strong."

Tears formed in his eyes but they did not fall. 'Where did he go? Did they take him?' He wondered. "Yeah...they did." He said numbly, not really knowing who 'they' were but you'd have to be really out of it if you didn't believe they were dangerous. Whoever 'they' was. Mokuba swallowed back the lump that had formed in his dry throat. He had to stay strong; Seto said that himself. "I have to stay strong for Seto." He declared quietly and left the lab. He rushed down the halls to where the living room was. There, he could call Yugi, or someone, and tell them what happened. And of course, he would call the police.

The boy held back his tears and strong determination, a little something that he had inherited from his mother and had also gained during the years, took over and gave him some comfort. 'This time I'm not gonna stand by and let things happen. I'm tired of being the one everyone has to save or protect. Now that the tables have turned, maybe I'll be able to prove myself and find him first.' Yes, part of him had no real intention of phoning the police because in his mind, he believed he could find Seto. It was part of growing up, wanting to be independent, to take charge and control. But there were limits to being in charge. Still, he figured he should phone the gang, just in case one of them miraculously decided to drop by and say hello or something like that. Besides, Mokuba knew he could always count on Yugi and the gang to help him out. They had been there in Duelist Kingdom, the two Virtual Reality worlds, and Battle City. Even when Anubis had attacked. Seto had become much more stable since then. Mokuba believed his big brother would defeat Yugi someday. Maybe not now, but someday.

He reached the living room and jumped over the large couch, landing on the soft cushions. He grabbed the cordless phone and quickly dialed Yugi's number. His hands were shaking from anxiety and the phone dropped from his hand onto the floor and rolled under coffee table just before he had pushed the last button. Grumbling, Mokuba reached under for it, his hand just inches away from the phone. on!" Mokuba grunted, stretching his fingers. All of a sudden, the phone moved quickly into his hand much to the boy's shock. Mokuba yelped and let go of the phone, which just fell back onto the floor. "What the...?" Mokuba grabbed the phone and stared at it for a few seconds. "What just happened?" He muttered and vaguely wondered if it had anything to do with those two beams that had shot out at him earlier. Not wanting to waste any more time, Mokuba dialed the last number and brought the phone to his face and ears. He waited as the phone rang once, twice, and the picked up a fraction of the third. "Yugi!" He blurted out, not bothering to wait for a response. "I need your help!"

"May I ask who is calling?" It was Solomon Muto. Yugi's number was also the phone number for the Game Shop.

Mokuba sighed. "It's Mokuba Kaiba. Can I please speak to Yugi?" He demanded, impatient.

Solomon replied, "Oh hello Mokuba. Yes I will go get Yugi. Just hang on." The phone was silent for what seemed like an eternity. In the background, Mokuba could hear the old man calling out for his grandson. 'C'mon, hurry!' Mokuba gritted his teeth waiting for the teen's voice.

"Mokuba? Hi!" Yugi's voice rang in his ears. "What's up?"

"Yugi, I need your help!" Mokuba went right into an explanation of previous events. Yugi listened carefully, interrupting every now and then to confirm a couple of things. "...And I was going to call the police but I want to find him myself." Mokuba finished, almost breathless. He anxiously awaited what Yugi would say to this although he had an idea of what the Duel Monsters Champ would say.

"Gee, this sounds pretty serious. Yes Mokuba I think you should call the police but it would be better if you didn't go after him yourself." Yugi responded.

"Why not?" Mokuba challenged with defiance. "He's saved me so many times. Now it's my turn."

"Mokuba, you're too young-" Yugi was cut off.

"I'm older now!" Mokuba shot back with a twinge of hurt.

Yugi apologized. "Sorry, I didn't mean it like that but Mokuba you're still too young to go after Seto yourself. These people...they sound very dangerous and it wouldn't be right for you to go alone or to even go at all. Think about it, what would Kaiba want you to do?" Yugi asked and the other end was silent. "He left you there and went himself because he loves you! He didn't want you to be at risk!"

Mokuba held back angry tears and spoke, his voice placid and even. "I don't care. If you won't help, then I'm going by myself no matter what. The police won't be able to find them. Yugi, these guys weren't normal people." Mokuba took a breath. "You're a good friend and all...I respect your opinion...but I have to go." He said in a finality tone of voice.

There was silence on Yugi's end. A sigh. Then, "Mokuba...I don't know..." Yugi was torn. He understood Mokuba's need but he also knew it was just too risky for him to go alone. "Mokuba...do you even have an idea of who they are or where they went?" He asked with uncertainty.

Mokuba frowned. Come to think of it...he hadn't even thought that far. "Um...no..." He mumbled, realizing Yugi had caught him. "Well, they might have left a clue somewhere in the lab...maybe Seto had a letter or something from them. I'll go check."

"That's a good idea but...well..." Yugi hesitated. He was going to suggest that he and the gang join him in his quest. Mokuba could use all the help he could get. "I don't want to offend you by saying this but do you think you'd allow us to come?" He asked timidly. Mokuba had grown up quite a bit in the last year, almost a teenager. Nonetheless, he was only eleven.

"You'd come?" Mokuba smiled. "Are you sure they wouldn't mind?" He was glad Yugi's friends were loyal and courageous.

"I don't think so. Summer's been pretty boring lately and I think they'd welcome the idea of adventure. Just as long as their parents don't mind us going on a little vacation." Yugi made a mental note to tell Joey, Tristan, Tea, Duke, and Bakura not to reveal the real reason why they were leaving for a week or so.

"Gee, thanks! You guys are really good friends if you're willing to put your lives on the line for my brother and I." Mokuba praised.

Yugi's eyes widened. "Well, if it comes to that...anyway, I'll let them know and do we meet at your house?"

Mokuba nodded even if they couldn't see him. "Sure. I'll be waiting. But first I'm going to check out the lab."

"All right. Be careful." Yugi said and hung up.

"I will."

They're gone now but not for long. They'll be back. They have chained me to my chair, demanding I work on that super-weapon and they've sent me blueprints with special modifications. I don't know what these modifications will do but I have to add them. Now my work will take even longer and even then, when I am finished, who knows what they will do with me? I had better be allowed to leave but part of me feels I must do something to stop them. But how and what? Generally, when someone tries to take over the world, they go after the biggest companies, the corporations, and anything else that will bring them money and power. Money. Power. Greed. The things of this world that lead to suffering, murders, and so much more. I am not interested in having everything. I have a company to run and at times, I enjoy running it and coming with new ideas and inventions. Even if I was forced to do it, I don't mind too much. It may have been destined to be...

No, that is foolish talk. Curse you Yugi! For bringing all nonsense into my life. I make my own decisions and I set my own course. That whole Anubis ordeal was merely a hallucination, or a hologram. That would explain how my cards worked to defeat it. Yes, I still do not believe what you say, Yugi.

I just happened to be the man for the job.

I wonder how Mokuba's doing...I hope he's all right. They still didn't tell me what those beams could do but I could see the hunger in their eyes for the weapon. It must bring some sort of power that will aid them in controlling this earth. But they don't even look like normal human beings. There's something about they be androids? No. If they were, I'm sure they'd have memory and data banks and could build this stupid weapon themselves. They must be some sort of humanoids but such a thing doesn't exist. At least I don't think so. These beings prove otherwise.

They are tall and slender with crystal pink eyes and dark thin hair. Their skin is very pale and they are built the same way humans are but are dressed in gray suits. They aren't human. I have asked them about this too but still they do not answer. Instead they gaze at me with some kind of look meant for children. I'm not brain dead; they'll regret messing with Seto Kaiba. Maybe I can stall for time and find a way to get back to my mansion. I'll 'accidentally' make a mistake in the construction of this machine. I'm not trying to save the world; I just want to go home and live in peace. If I happen to stop them on my way in doing so, so be it.

I...I just don't know how I'll do it. But I'll figure something out.

I will.

Mokuba got up from the couch and headed for the laboratory. He strode through the halls quickly and opened the door. He paused in mid-step and decided to start his search from the entrance. Bending down slightly and narrowing his eyes, Mokuba began his scour of the lab. So far, everything was normal except for the mess and Mokuba peered through the fallen objects and other tools. Nothing. He even inspected the junk heap of the machine. Nothing was there either. The boy was about to give up when he heard a faint but unwavering beep coming from the far corner. Raising an eyebrow, Mokuba slowly made his way over to that corner, not wanting to disturb whatever it was that caused the beeping. He didn't want to lose it.

Finally, he was there and he bent down to the toolbox. He dug through its contents until the beep became louder to the point where it seemed to stay. 'Looks like it's coming from this.' Mokuba thought and brought the device to his ear. 'Must be one of Seto's inventions...hey wait a sec.' Mokuba brought it closer to his face and saw a single symbol on the black screen. It was an arrow pointing towards the right. Mokuba looked to his right and saw there was nothing there. 'Maybe it means outside...hey! What if this leads to them!' Mokuba had no doubts in his mind that his older brother would have left something as a clue. He didn't know when the elder Kaiba had built the radar but he was smart enough to do so and leave a clue to where he was. 'Probably for the police to find...but then, how do I know for sure this'll lead to them?' His heart sank and for a few passing moments, he stood there in the corner, staring at nothing. The only sound he heard was the beeping.

'I have to take a chance. It's my only lead.' Mokuba silently declared. 'I will find you Seto.' He left the lab with radar in hand. 'I hope we'll find you. I just don't know what to do if we have to face those guys who kidnapped you. They have to be way strong if they were able to take you by force cuz you're pretty strong and know a bit of martial arts and self-defense stuff. I don't know any of that, at least not well. Oh! I wish I had the strength of 10 men or something to be able to take anything! I wish!' Mokuba shut his eyes tightly for a second, hoping maybe that would do the trick. Alas, he opened his eyes and still felt the same. False hope was all it was. Nothing like that could ever happen. 'Wishful thinking.' Mokuba grimaced and continued down the halls towards the living room.

Suddenly, the air wavered and something, no someone, materialized right in front of him! Mokuba stopped short and took a few steps back. "Huh? What's-" A look of panic came into Mokuba's dark eyes as he watched the form of a odd-shaped head appear and than the rest. Needless to say, Mokuba had nothing to worry about. The person was shorter than he was and the odd-shaped head, was the person's hair. "Who are you?" Mokuba asked, doubtful if about it being friend or foe. Perhaps it was one of...them?

It was a boy who appeared to be seven years old. He had a clueless expression on his face, had almost black eyes, and jet-black hair that stuck out in all directions in a strange style. His clothing consisted of an orange gi with a navy blue long sleeved shirt on the inside complete with dark blue boots. He was only a few inches shorter than Mokuba. "W-where am I?" The boy asked, looking around.

"Uh...hi." Mokuba spoke and waved his hand in the air slightly. He looked harmless enough. "I'm Mokuba." Mokuba introduced himself when the boy faced him with a surprised look. "Who are you?" He repeated his earlier question.

"Uh, I'm Goten." The boy answered, looking up at him. "Do you know where I am?" Goten asked with a curious look. To him, Mokuba also seemed unobjectionable and appeared to be no real threat.

"You're inside my house." Mokuba answered as if it were obvious. "Where are you from?" He questioned the boy.

"Uh...I live in the mountains." Goten scratched the back of his head in the classic Son way. 'What was it mom said...? 439 East District...yeah!' "I live in 439 East District...in the mountains. [1]" He grinned at the older boy.

Mokuba frowned. "I've never heard of that place before. Are you sure?[2]" He waited for an answer. Goten nodded and Mokuba sighed. "Well, maybe you can show me another time. I don't know how you got here...and I don't know how to get you back. So in the meantime, you can stay with me until I figure some things out." Mokuba wondered what he was going to do with the boy. He couldn't just abandon him so he would have to take Goten with him. Hopefully he wouldn't be too much of a problem.

Goten suddenly looked teary-eyed. "I will get back home, won't I?" He asked, afraid of the answer.

The young Kaiba brother hesitated. "Sure you will." He said at last with a grin. No need to worry the kid. "Listen, I've got some friends coming over and, well, I'll explain what's going to happen when they come, okay?" Goten nodded and Mokuba led the way to the living room.

As they were walking, Goten's mind began to wander. 'Gee, this house is a lot bigger than mine is! I wonder how I got here? Well, I sure miss Trunks, Mom, Gohan, and Dad [3]. I'm hungry.'

Mokuba froze and stopped dead in his tracks. "What did you say?" He asked and spun around to face Goten. "You're hungry?"

Goten smiled. "Yeah! I'm hungry. Gosh, it's like you read my mind!" He exclaimed, fascinated by the idea. "No one's done that before! You must have powers like I do!" Goten continued, grinning like there was no tomorrow. If his best friend, Trunks, had been there, he would have immediately shushed the youngest Son brother.

The eleven-year-old's eyes widened and he gasped. "You mean, you didn't say anything? And you have powers?" Mokuba squeaked. Did he really just read Goten's mind?

"Yeah!" Goten cocked his head. "I never said anything out loud. So you must've heard my thoughts! I don't know how but that's pretty cool!"

Mokuba's throat went dry. First the telephone goes to his hand without even touching it at first, then the boy appearing out of nowhere right after he made a wish, and then the mind reading...what in the world was going on? And Goten said he had powers. Mokuba's wish had been for the strength of ten men. Did Goten have this strength? "Goten...what kind of powers do you have?"

Goten's smile faded and he looked guilty. "Oops. I wasn't supposed to tell anyone or show anyone." He admitted. "That's what my mom said, and my big brother Gohan."

Mokuba's shoulders sank but then he brightened. "Can you please tell me? It's very important that I know. You see," Mokuba paused. 'Should I tell him? Ah, why not? He's going to be coming with me anyway.' "I have to go save my brother from these people and I will probably need your help."

Goten blinked and then spoke. "Really? Well I can fly and shot ki blasts...and I can turn Super Saiyan!" He added quickly.

Now it was Mokuba's turn to blink. 'What did he just say?' "Huh? What's a Saiyan? And what's ki?" He asked.

Goten frowned. "Uh...I don't know exactly what a Saiyan is but I'm half. Ki is energy." He answered and then bit his lip as a large rumbled filled the air. He looked down at his stomach and back up at Mokuba, grinning sheepishly. "Uh, do you have anything to eat? I'm hungry!"

Mokuba sweatdropped. This boy was going to help him?

A/N:[1] I'm pretty sure that's the right place where the Son family lives. I couldn't remember if it was 439 Mountain District or East District or even if it was 439. If this is incorrect, I'd appreciate the correct location and I'll change it.

[2] For this fic, where the Son family lives does not exist. Neither do all the DBZ cities. In Mokuba's world that is.

[3] Due to the fact that I cried a bit when Goku died, I'm bringing him back so he's alive in this fic even if he's not exactly in the story. =)

If you haven't figured it out yet, Mokuba's powers are Telepathy, Telekinesis, Mind reading [different from telepathy], and the ability [Ok...I made this one up. =/] to bring about any power or person if you wish really hard and earnestly! Little odd but oh well.

Goten's powers are his usual Saiyan powers. If you do not know about Son Goten or what a Saiyan is...well, I'd explain but it would take too long so if you really want to know, just search it up.

Review please! It is always appreciated. I'll try and get the next chapter up ASAP because I'm currently completing my story, "The Dark Ages".