After mistakenly killing the relative of London’s biggest crime lord, mediocre hitman and ex-pat Tommy Ward (Josh Duhamel) is forced to go on the run and take refuge in Los Angeles. In order to get back to his son, Tommy makes a deal with his new employer Benson (Rick Hoffman): teach his socially awkward son Julian (Jeremy Ray Taylor) how to become a man in exchange for safe passage back to the UK. Now, Tommy is forced to drag Julian along on his latest contract killing of a renowned assassin. What starts off as a simple ride-along soon descends into utter mayhem as Tommy and Julian must find a way to survive the night so that Tommy can get back to his son and Julian can win the approval of his father.