Anet, Marta, and Tina enroll in the contest called Cool Girl to win, but they realize that to find their personal values, it is necessary to believe in themselves.

Genetically modified bull sharks attack Prague's waterways. Detective Kowalski, Dr. Novak, and Dr. Cerny uncover that Dr. Reef is responsible, seeking to weaponize marine life. They work together to infiltrate his lab, outsmart his defenses, and confront the threat.