Romka, a young computer genius, main hero of the film with Vania and Ziablik, students of the maritime institute, will experience many dangerous and exciting adventures. Doctor Smog, who leads the video game "Master of the puddles", takes the boys into a virtual world to carry out his perfidious and monstrous project to invade the entire planet-global toy library which makes people cowardly and cruel. But friendship will be the end of everything. With Skiper the sailor and Scafandritch the water genius, the boys tackle Smog ...