Schubert's tracking of a mysterious power source causes a blackout, at the center of which, Mark discovers an ancient statue of a hawk. When he rescues Schubert's daughter Juliette from drowning, the villain learns of the hawk and steals it to discover the secret of its power.

Strapped for cash from his many expensive bids for world domination, Schubert breeds an aggressive genetically-altered jellyfish ten feet across named Poobah, and uses it for blackmail purposes. When the creature attacks a swim meet, Mark must battle the jellyfish.