Stranded in 1955, Marty McFly learns about the death of Doc Brown in 1885 and must travel back in time to save him. With no fuel readily available for the DeLorean, the two must figure how to escape the Old West before Emmett is murdered.
An astronaut goes into space with a chimpanzee. When they return to Earth after their orbit, it is discovered that the chimp has the brains of the astronaut, and the astronaut has the brains of the chimp. Complications ensue.
