Hey guys ^_^ I am back with ANOTHER story XD Like I mentioned in my other story, I have nothing against Sakura because I think she's cool ^_^ or at least in Shippuden. Anyways, here is the plot:

Uchiha Sasuke and Haruno Sakura are two of the FBI's most valuable agents. Too bad they just can't get along. But when they find themselves in a dangerous lifegambling game, they'll have to put their differences aside and deal with it or else. SasuSaku

Main Pairing: Sasuke x Sakura, Gaara x OC (because I like him xD)

Minor Pairings: Naruto x Hinata, Ino x Kiba, Neji x Tenten,

Disclaimer: I do not own Naruto or its characters. If I did, I'd be rich :D

Somewhere In Tokyo

A young man was seated on a black rolling chair in the basement of an old, abandoned house. The only light source was the computer screen that shown brightly in the room. He wore a hideous grin as he read over a certain letter on his computer. Then, letting out a crazed crackle, his finger hovered over the 'Send' button.

"With this," he said," the game begins."

And that was the start of a living nightmare for the Japanese FBI.

Tokyo City, Japan; FBI building

"Do you have an eight?"

"Goldfish."

"Do you have a two?"

"Goldfish."

"Do you have a Jack?"

"Yes….. do you have a nine?"

"Goldfish."

"Do you have a King?"

"Yes-"

"HAHA I WIN, DATTEBAYO!"

Everyone in the cafeteria stared at the cause of the outburst: a blonde haired teenager. He grinned sheepishly. "Sorry," he squeaked before taking a seat. His friends, Sakura, Kiba, Tenten, and Ino, snickered.

"Nice one, Naruto," Sakura teased. Naruto just laughed it out and rubbed the back of his head.

"Idiot," they heard a familiar voice from behind Naruto. Just by his voice everyone knew who it was.

Meet Uchiha Sasuke, one of the most valuable agents in the organization. This dark haired, onyx-colored eyed wonder was famous among the society.

"Shut up, teme!"Naruto retorted. As you can see, the two had a bitter rivalry going on. Naruto would always try to catch up to him, but would fail as a result. And to think they were the best of friends. This truly was a case where 'opposites attract'.

"Cut it out, you guys," Sakura demanded. The pink haired 19 year old always broke up their arguments and fights. Though she was annoyed with him herself, she didn't dare pick up a fight.

Or at least not an unworthy one.

"What do you want now, Sasuke?" she asked, slightly annoyed. It was ten in the morning and just seeing his face put her in a bad mood. Before he got the chance to answer, the lazy super genius of the science department, Nara Shikamaru, approached them.

"Tsunade-sama wants Sasuke, Sakura, Naruto, Kiba, and Ino in her office," he announced. He knew what was going through their minds. "No, I don't know what she wants," he added.

The six listed glanced at each other and shrugged. If it was Tsunade-sama's orders, they just had to deal with it. The 52 year old woman was one of the head commanders in the organization. It was strange how despite her old age, she still looked like a 24-year-old woman.

To tell you the truth, she didn't act like a wrinkly, old prune either.

Ten minutes later, the five agents found themselves at her office. The FBI building had nearly sixty floors, and hers was at the very top. The cafeteria was on the sixteenth floor, so the ride was pretty long. During the whole ride, Naruto kept talking about what kind of ramen he had last night, so it felt even longer than usual. You couldn't imagine how thrilled everyone was when the elevator doors opened, because they all rushed out to escape the 'Ramen Talk'.

"Tsunade-sama, what is it that you need from us?" Sakura asked in a polite voice once they entered her room.

"I am assigning you to a new case," the blond woman said sternly. As she said that, the large television screen on the west wall flickered on. The blonde haired woman stood up and went over to the TV. It showed some sort of email.

"Sakura, why don't you read this for us?" It sounded more like a command instead of a question, but the teenager obeyed anyways.

"Um…. Ok…

"Dear FBI,

"I hereby declare a challenge reserved only for the best of the best. If you dare to take on this challenge, I suggest you continue reading.

"This challenge is like a game. There are fifteen levels. Each level features a mystery that you have to solve. Whether it's a murder mystery or a kidnapping crime, I expect you to solve it. If you can't, then you lose the game and Tokyo will be doomed. If you pass, you move on. I advise you to take this advice: Don't ignore this letter. I will be waiting for your reply. The deadline is twelve hours.

"If you decline, I am happy to say that I won. As a reward, I will drop a bomb and every citizen within a hundred mile radius of Tokyo will be dead. Sincerely, Ace," she finished.

"Is this a joke?" Naruto yelled. Ino whacked him on the head.

"Did you read it carefully?" she scolded. "It says 'don't ignore this letter'."

"That was a rhetorical question!"

Tsunade cleared her throat, signaling them to stop bickering. They did, knowing how she gets when angered.

"Why are you assigning us to this case? What about Kakashi-sensei, Jiraiya-sama, and you?" Kiba asked.

Tsunade laced her fingers together and rested her chin on it. "Ace says he wants a challenge, and he demands one. Besides, you five are capable of doing a dangerous mission like this. Others will be here to help when you need it," she explained. The agents nodded.

All of a sudden, a chat message popped up.

"It's that Ace dude!" Naruto hollered. Tsunade hesitantly clicked on it and the window appeared.

'I see you've picked your players,' it read.

"How does he know that?" Kiba asked.

'If you're wondering how I know, listen for a beeping sound.'

Sasuke was the first to hear it. "I hear it," he announced and walked around the room. "Get me a chair." Naruto wasted no time retrieving a tall stool. The Uchiha climbed onto it. He felt around the ceiling tiles and lightly pushed up. It lifted with ease and his hand snuck into the vents. Out came a beeping walkie talkie.

Ino broke the silence. "So this is how he knows what we're talking about!"

Anyways, on with the subject. The first notification card will be sent in twenty four hours. I'll be generous and let you rest before the big day. Don't try anything funny like tracing my email, because I'll send you a deadly virus if you do. Play fair and you live.'

"Wait a minute, what about-"But before the blonde haired woman could finish her sentence, Ace signed out.

With all his strength, Sasuke threw the talkie at the ground and stomped on it, crushing the device. "We can't risk him hearing what we're planning," he explained. "If he managed to plant the talkie here, it must mean he has someone working for him."

Everyone nodded in agreement.

"Be on your guard, but I doubt he'll try anything funny during these following twenty-four hours," Tsunade reasoned. Everyone nodded. "Have a good rest tonight. I will call you to my office at eleven a.m. and be ready."

With that, she dismissed them.

This, Sasuke smirked, is going to be interesting. Let the game begin.

That's it for now! ^_^ Comment please! I want to see what you think! If you flame or bash, it's only going to be a waste of your time because I don't care about that XD Constructive criticism is allowed if it helps me ^^ COMMENT PLEASE!