“ Hey! I just killed two people! ” “ Oh, great! ” Even Phoebe ( Kristen Stewart ) does not believe it when her boyfriend Mike ( Jesse Eisenberg ) phone to tell him he has committed the irreparable in this first extract American Ultra a action comedy that promises to be particularly encouraging. History? That of an amateur of weed layabout, who works in a small supermarket but realizes that he is actually a sleeper agent overtrained whose memory has been erased. In the blink of an eye, his past resurfaced and Mike is in the middle of a government operation to eliminate it. It will then have to appeal to its unsuspected secret agent skills to survive.