After failing his college entrance exams, Kai Rivera's father needs 300,000 for leg surgery. Kai awakens the Marine Life Detector System. He befriends Manny Warren and Finn Lee, stands against fishmonger Howard Goldman, and saves Lana Shaw. Righteous and loyal, he pays for his father's surgery. He establishes Rivera Seas, fights poaching gangs, and finds shipwreck treasure. He donates artifacts, funds a school, and establishes a marine protection fund. The ocean offered him a broader path.