The submarines Olly and Beth are joined by their friend Bobsy, who is absolutely convinced that he is a descendant of "Pee-Rates" - old legendary treasure seekers. Their journey is filled with wonders, treasures, adventures and, of course, humor, because they are followed by the gang of Red Seahorses led by intelligent, but extremely dangerous sharks... But even that could not stop our heroes! Olly, Beth and Bobsy will survive a severe storm, overcome all obstacles and eventually be able to find the treasure! But the main thing that our treasure hunters will understand by the end of the race is that the most important thing is, of course, family and friends!