Before his death, the last mortal human on Earth reflects on his long past and thinks about the lives he might have led. A boy stands on a station platform as a train is about to leave. Should he go with his mother or stay with his father? As he is forced to make an impossible choice that defined his life from then on. The young boy tries to find the correct path, following each choice to its conclusion. Eventually, the boy takes a third option: to not make the choice at all. He leaves both parents and runs away towards an unknown future. Infinite possibilities arise from the unlimited decisions. As long as he doesn't choose, anything is possible.