In this cosmic, multi-dimensional, romantic take on "Little Big Man" (the film also resembles "Inception," Eternal Sunshine of the Spotless Mind," "Dark City" and even one scene from Leos Carax's "Pola X"), Jared Leto gives an exceptional performance as a man whose life spins out dependent upon his different choices, leading him to conclude that not making a choice leaves more possibilities.
The old man, played by Jared Leto in heavy Little Big Man makeup, is the last dying person, since everyone else in the future is “quasi-immortal” thanks to triumphs in stem-cell research.