Looper (2012)

In a future where time travel is used by the mob to dispose of their targets, a hired gun named Joe discovers that he is next on the list. As he tries to escape his inevitable fate, Joe encounters his older self who is on a mission to change the future by killing a powerful figure known as the Rainmaker. Along the way, Joe forms a bond with a mother and her son, who may hold the key to preventing the rise of the Rainmaker.