The series centers on a boy named Maxwell "Fantastic Max" Young who has adventures in outer space with two of his toys: FX, a pull-string alien doll from a planet called Twinkle-Twinkle, and A.B. Sitter, a C-3PO-like android made of blocks. The series' pilot episode, Space Baby, first aired in the U.S. in November 1986 on The Disney Channel. In the United Kingdom, the series was broadcast on the BBC as part of its Children's BBC programming block.