In an attempt to control crime in an undersea society, the council replaces Garth 1 with the ruthless Enforcer as leader who then refuses to relinquish control. The Super Friends assist the deposed leader as he flees his home with soldiers in pursuit. The Wonder Twins try to save two teenagers who face a shark after their boat overturns and teach a lesson on boasting. The Super Friends try to turn time back to undo the damage done when a scientist uses a time tunnel and evolution changing device to change history by letting primitives rule over modern humans. Aquaman and Green Lantern fly to South Africa to try to save diamond miners trapped in a cave in. Superman teaches bicycle safety and the importance of a healthy breakfast. Wonder Woman teaches how to stand a glass of water on a playing card in the "Magic" segment.