A/N: This idea is from Fallen Crest's story 'Truth Revealed'! I highly recommend reading it! I have been given permission to use the idea so no worries! Please tell me how it is!

"I'm not going in there." Edward Elric stated seriously, crossing his arms. He closed his eyes and looked away from the wooden doors in front of him with a frown. There was a metallic sigh from behind him and a rough nudge sending him reeling forward. Ed stumbled into the doors causing them to fly open. The young alchemist stumbled into the office and fell on his face with a yelp. There was a round of laughter from the four men at their designated desks, while the single female remained stoic as always and continued doing her work without sparing a glance to the furious thirteen year old.

"AL!" Ed howled angrily. He leapt to his feet and pointed a threatening finger at the empty suit of armor. "How dare you betray me like that!"

"But, Brother! You never would have come in here if I didn't! You were standing there complaining for ten minutes!" Alphonse defended. The armor's statement caused another round of laughter to resound throughout the room. Ed glared at the four men over his shoulder.

"Shuddup!" He snarled, teeth bared. Kain Fuery and Vato Falman's chuckling ceased while Heymans Breda and Jean Havoc continued roaring with laughter.

"Hey Chief! Nice of you to stop by!" Havoc snorted between giggles. Ed gritted his teeth and opened his mouth to retort when there was an unmistakable click of a gun behind him. Ed, Havoc and Breda froze and clamped their mouths shut.

"Get to work, boys." Riza Hawkeye growled dangerously from behind Ed. The blond cautiously turned his head to Riza standing slightly to the side of him with her gun trained on the two frightened soldiers.

"Yes ma'am!" Havoc and Breda chorused nervously. The ducked their heads and returned to their paperwork. Riza nodded approvingly and holstered her gun. She turned to Ed, causing him to tense nervously.

"Colonel Mustang would like to see you." She stated, although Ed knew it was an order. Rank didn't matter to Ed, Riza was too scary to ignore. Although he wouldn't disobey Riza, he scowled and glared at the inner office doors where he knew the bastard Colonel was waiting.

"Dammit, I hate that bastard." Ed muttered as he shuffled to the Colonel's office. Al's heavy footfalls followed him into the inner office where Roy Mustang was waiting at his desk twirling a pen between his fingers. Ed scoffed.

"You're being productive." He drawled sarcastically before flopping onto the couch across from the Colonel. Mustang smirked slightly. Ed scowled at the man and his stupid smirk. That smirk always meant Mustang was gonna say something mocking or stupid. Usually both.

"I'm more productive than you, Fullmetal, seeing as you haven't had any leads in three months." Mustang said, eyes closed with the smirk still plastered across his face. Ed growled and looked away.

"Why am I here again?" The small blond asked suddenly, clearly wanting to get out of the office as soon as humanly possible. Mustang opened his eyes and the dreaded smirk fell away. He looked pointedly at Alphonse, who in turn nodded in understanding. He was not in the military so he understood that every once in a while he couldn't hear whatever it was his brother was going to do. The armor turned and exited the room. The door clicked shut behind him.

"We have a mission. It's a-" Mustang started, He was immediately interrupted by Ed.

"Woah, woah, woah!" He cut in, sitting up straighter and glaring at the Flame Alchemist. "We? As in you and me? As in, I have to go on a mission with you?"

"And the rest of the team, yes." Mustang nodded. Ed screamed in frustration and pulled at his hair, falling back on the couch. Mustang sighed. "It gets worse."

"Noooo." Ed groaned in anguish, tilting his head back. He sighed in resignation and motioned for the Colonel to get it over with. "What is it?"

"It's an undercover mission and you have to pretend to be my son." Mustang responded, bracing himself for the assault his ears were about to receive.

"WHAT!?" Ed shrieked, launching off the couch and slamming his hands on Mustang's desk. There was a crash from outside the doors as someone dropped something in surprise.

"I don't like it any more than you do." Mustang sighed, rubbing his head to try and ease the headache that was coming on. He found he did that often when Fullmetal was around. "But that's still not the worst part."

Ed opened his mouth to scream again but Mustang cut him off before so much as a squeak came out of his mouth.

"It will last a week at best and we have to stay in the same house." Mustang said. Ed could have sworn his soul exited his body. He collapsed on the ground and moaned pathetically. Mustang nodded in agreement even though the wallowing alchemist couldn't see it.

"What about the rest of the team? And Al?" Ed asked, propping himself up on his elbows. Mustang shook his head with a sigh.

"Falman will be there as a butler but everyone else will be backup. Except for Alphonse. A giant suit of armor would be too suspicious in this mission. If even one person is frightened of Al, the whole mission could go down the drain." Mustang explained. He leaned back in his chair and crossed his arms. "Questions?"

"Uh, yeah." Ed snarled. "What the hell is this mission?"

"It's a drug bust." Mustang said. When Ed opened his mouth to say he could easily just run in and destroy everything (more paperwork for Mustang), The Flame Alchemist held up a hand to stop him. "And no, you cannot just run in and do what you normally do for drug busts. This one is a huge organization that is very professional so your… tactics wouldn't work"

"Ugh, this sucks!" Ed exclaimed as he sat up. He slouched over miserably and motioned for his superior to continue his explanation.

"So, pretty much, I'm going undercover as a rich widower who turns to drugs after his wife dies and you are the rebellious son who also does drugs." Mustang explained swiftly. Ed gave another groan.

"Whose house are we going to if we're rich?" The teen asked grouchily.

"An informant of mine has a mansion." Mustang waved his hand slightly as he answered as if having a random mansion at disposal was normal.

"Of course." Ed sighed, flopping onto his back once again. The Flame Alchemist shook his head at his subordinate's childishness and returned to scribbling signatures on different documents that were strewn about his desk. "So what about Hawkeye and the others?"

"They'll be backup. Fuery will be communications. We leave in two days. Get Al out to Resembool or something so he's not just waiting around." Mustang responded shortly. He glanced up at his subordinate lying on the couch. "Now get out."

"Grouchy." Ed muttered as he shuffled out of the office. He closed the door and looked up at his brother. He put on a huge grin and threw his hands up before shouting, "You're goin' on a trip Al!"