The Bionic Six are taking an underwater tour of the Marianas Trench, scouting a test location for Prof. Sharp's new invention the Gravitron. On the tour, they meet up with their disabled friend Ronnie Gordon. While I.Q. is visiting Ronnie and his family, Scarab makes an attempt to steal the Gravitron. Scarab kidnaps Prof. Sharp and Ronnie's father, and the Bionic Six must rescue them. However, an impatient Ronnie tries to rescue his father on his own.