Call It Science Fiction, Part 2, the Exchange is the second in a series of stories about the adventures of three ET's residing in a Type-2 space ship as they get involved in the lives of earthlings. In this episode Ty is exchanged with a black newborn baby the son of a share cropper in the segregated south, 1922. He doesn't know he's an ET. His friends above get him out of several scrapes including being lynched by the Ku Klux Klan. He is eventually brought home being re-exchanged as a young adult.