Famed underwater archaeologist Jonathan Dryden discovers the lost city of Melodius off the coast of Greece. Scarab's goons infiltrate Dryden's team, and steal the treasures of Melodius, including an ancient harp. Madame-O uses the harp on Scarab, which causes him to fall in love with her. Madame-O extends her control to the entire city, Prof. Sharp, the Bionic Six, and the entire world. Only Rock-1 is unaffected, and must take on the world alone.