Lennie kills somebody, so the pair have to flee to another place, to find a new job. They find a new job on a ranch, working for some old guy. everything is pretty good until Lennie, of course, ruins their life by killing Curley's wife. When on the run for the second time in this movie, George has had enough, and decides to shoot Lennie in the back of the head, to stop his stupidity from ruining his life, even more.