Jota is a very brave and curious Jet Sky, but he keeps getting into tremendous trouble on the high seas. It's always his faithful and clumsy friend Beto Bote and his sister Lili who help him out of the mess he lives in Oceanópolis, the city of Barquinhos! Together, they protect themselves from natural evils, face disagreements and difficulties and learn important values for life. Observing everything that goes on there is Mestre Lúcio, a beacon who not only illuminates the city with his light, but also with his wisdom, always ready to give advice at the right time.