American Ultra is just a fast-paced activity comedy in Mike, a un-motivated and seemingly hapless stoner whose small-town life with his girl friend, Phoebe, is turned ugly. Unbeknownst to him, Mike is actually a sleeper agent that is trained, deadly. From the blink of the eyeas his ago comes back to haunt himMike is thrust to the middle of a government performance and is forced to summon his inner action hero in order to survive.