The year is 1946. Teenagers Roberta and Tommy Lee just moved with their parents from Chinatown to the center of Metropolis, home to the famous hero, Superman. Tommy makes friends quickly, while Roberta pines for home. Then one night, the family awakens to find their house surrounded by the Klan of the Fiery Kross! Superman leaps into action, but his exposure to a mysterious green rock has left him weak. Can Roberta and Tommy help him smash the Klan?