The plane flew over a large guarded castle. The plane was being driven Tails. When Tails got just over the drop off point, he shouted to the other passengers. "Eggman's base is just below us."

"Nice going Tails." Sonic said from behind Tails. Sonic turned to face Knuckles, who was also in the back, "Ready Knuckles?"

"As Ready As I ever will be." Knuckles opened his eyes and looked down over the side with Sonic. He turned towards Tails, "Tails we will meet you inside once you land the X- Tornado."

"Roger that Knuckles. Your parachutes are at the bottom of your seats." Both Sonic and Knuckles found their parachutes and firmly put them on.

"Alright Tails, we're off. See you inside." Sonic jumped. "Whoa-woooo!" This was the sort of thing Sonic lived for, excitement. After all you only live once.

"Can't that guy just cool it for a sec? Well Tails, later." Knuckles joined after Sonic and took a leap. It was seconds later, both were landing right on the outside of the castle. When Knuckles landed, Sonic was just coming around.

"There is no way in. Eggman's base is completely closed off." Knuckles looked around, and then gave an evil smirk.

"Well if there is no way in, then we will just have to make our own entrance." Knuckles walked over to touch the stone wall. "This will do just nicely." He pulled his hand back and shouted. Knuckles punched through the wall making a huge hole in the wall. He smiled at the work he had done.

"Awesome work Knuckles." Sonic gave him a pat on the back. At that moment a loud alarm went off. It was then, that Eggman's robot guards came out and all turned their focus on to the two new comers. "Well it looks like they know we're here. We better hurry. Knuckles you take care of all these guys and I'll handle Eggman. " Sonic took off running inside, Running past any robot guards that came across his path.

"Hey Sonic, just don't leave me here." Knuckles took off after him, but the robots blocked his path. Giving out a growl in anger for being left behind, he turned to let his anger out on the robots. "Fine, if it's a fight you want, then it's a fight you will get." Knuckles punched the closest robot to him. "When I catch up to Sonic, he's going to pay for this."

Sonic was making his way through the castle looking for Eggman. Why a man needed a base this big, he would never know. Eggman had taken control of all the TV stations, and threaten that he would destroy the world if Sonic and friends didn't show up within 3 days. So Sonic came to stop Eggman and his plans. It was be a major drag if the world was destroyed. It took 2 days just to find out where Eggman was hiding and what his plans were. He had to get to Eggman as fast as he could before it was too late. He was destroying any robots that got in his way. Sonic just kept following the main hallway until he found the main control room. "Finally. Found you Eggman. " Sonic opened the door but what he found, was something he wasn't expecting at all. "Shadow?" Shadow was standing there and he looked to be stuck in some sticky like glue, while Eggman in his Robot took aim at Shadow with a missile.

Eggman smiled, "Looks like this is Good-Bye Shadow."

"Eggman you will pay this time." Shadow stood before Eggman, ready to take him down. Eggman was in a Robot machine that he was able to control.

"Is that so, Shadow? Is this how you repay me for reawaking you? You betray me?" Eggman took control of his robot, making it take a step forward towards Shadow. Shadow clutched his fist together.

"BETRAY? YOU'RE THE ONE THAT BETRAYED ME!" Shadow took a step forward towards Eggman. "And now you're going to pay." Eggman just laughed and launch a missile at Shadow, who just dodged it by jumping over it.

"We'll see about that. " Eggman fired a machine gun at Shadow. But Shadow was too fast, running and dodging bullets. Shadow stopped running when he realized Eggman ran out of bullets to fire. Shadow then Jumped and made his move to attack. Shadow got close to Eggman and before Eggman could make his move to block, Shadow kicked hard enough to break the robot's arm off. Shadow backed away, thinking and preparing his next move when it was then that Eggman started to laugh. "So you think you have won Shadow? You forget I was expecting another fast hedgehog." It was then that the floor underneath Shadow's feet got sticky, and he couldn't move.

"What's this?" Shadow tried to jump away but no matter what he did, he couldn't break free. Eggman's laugh echoed the room.

"Did you think I was just letting you dodged my bullets so easily? I was lending you to that spot. It was a trap for Sonic but it doesn't hurt trying to see if it works." Eggman then took aim at Shadow with his missile. Eggman smiled, "Looks like this is Good-Bye Shadow."

Eggman fired the missile. "Not so fast Eggman!" Sonic came rushing in, and kicked the missile so it went off course and fired just in front of Shadow, Blowing up the floor and sending him flying. Luckily, Shadow caught himself and landed on his feet. "Are you alright Shadow?" Sonic ran to Shadow's side. Shadow gave him a nod.

"Thanks for saving me Sonic." Shadow then turned to Eggman. "But this is my fight." Sonic Sighed.

"No need to be a tough guy. Besides Eggman challenged us to a fight, and there was no way I was backing down." Sonic took a fighting position.

"Fine, just don't get in my way." Shadow joined him and faced Eggman. Sonic smiled.

"I'm glad we could come to an agreement, now to take care of Eggman." Sonic then ran to attack Eggman's machine, Shadow followed. They were able to knock Eggman off balance. "Take that Eggman." Sonic was proud of himself. Eggman gave out a growl. Before aiming his lasers at the hedgehogs and firing. The two of them couldn't get close as long as Eggman was firing his lasers keeping them at a distance. Sonic was trying to think of a way to get close to Eggman when the door came flying towards Eggman knocking him off balance once again.

"Did we miss much?" Knuckles stepped out of the smoke, with Tails following right behind him. "I came across Tails on the way here. So I brought him along."

Sonic gave Knuckles a thumb up. "Perfect timing Knuckles!" At that moment Eggman was able to get his machine up from the floor. He started at the new guests to the room, he growled while starting to turn red. Eggman was angry that extra guests showed up unexpectedly, but he laughed it off.

"Well I'm glad you could show up for the party Knuckles, Tails. Now I can deal with all of you at the same time. There was a reason why I wanted you all here." Eggman turned to the big screen behind him. "Computer, activate Plan Alpha RPH." The computer then came on.

"Activating Plan Delta, in 20 seconds. " Eggman smile meant that whatever Plan Delta was, it wasn't good.

"20… 19… 18..." The computer was starting its countdown as the numbers displayed on the screen. Sonic ran besides Tails to give him the run by of the plan.

"Tails, Shadow and I will keep Eggman Busy while you try deactivating the system before it is too late. We don't know what that thing will do if it's activated." Tails nodded at Sonic. "Knuckles," Sonic waited till Knuckles faced their direction. "You cover Tails while he's doing his thing."

Knuckles nodded, "Alright. Let's go Tails."

"Okay." Tails and Knuckles took off to try to stop the countdown.

"Oh No you don't." Eggman fired a laser towards Tail's direction to try to stop him. But knuckles punch the floor sending pieces in the air to block Eggman's attack, before Eggman could fire again, Sonic Head-butt Eggman's machine.

"You're fighting me Egg-Head." Sonic faced Eggman in triumph. Then a black and Red ball also Butted Eggman's machine, knocking it down.

"And me." Shadow appeared alongside Sonic. Sonic gave Shadow a huge grin along with a thumb up.

"Alright, Shadow nice work. Now to take care of Eggman once and for all." Shadow gave his nod meaning let's do this. With both Shadow and Sonic working together they tag team Eggman, hitting him in their ball form repeatedly till Eggman's robot was covered in dents and was missing not just one arm, but two. It looked like they were winning until they heard the computer still on its countdown.

"3…2 … 1…" Laughing Eggman hit his escape button on his robot which turned the cockpit's seat to an escape pod.

"Good-Bye Sonic. You better hope we don't meet a next time, for you won't be as luckily." With that Eggman flew up straight into the roof of his own base and was gone within a second.

Sonic barely had time to look at Tails when he heard Tails screaming at him. "Sonic, I couldn't deactivate it in time. It's going to blow!" At that moment the screen read "ACTIVATING".

Sonic shouted to the others. "We have to get out of here." But it was too late, within that very second the machine went off and a bright light filled the room engulfing everybody. Sonic realized he had failed.