American Ultra is a fast paced action humor about Mike, a unmotivated and hapless stoner whose life with his stay-at-home girl friend, Phoebe, has been suddenly turned upside down. Unbeknownst to him, Mike is a softball representative that is highly lethal. In the blink of an eyeas his secret past comes back to haunt himMike is thrust into the middle of a government operation and is forced to muster his inner action-hero as a way to survive.