The young Leonardo da Vinci is able to recreate his world of brilliant discoveries, intelligent inventions.
In this adventure together with Leo there are new and old friends, amongst which the strong and determined Lisa that the young boy is in love with without being aware of it. There is also a handful of fearful pirates that resort to strong-arm tactics to reach their goal: get the treasure that is under the sea next to the island of Montecristo. Thanks to his futuristic inventions, most importantly the diving suit, Leo finds the treasure first... but the pirates are on his tail!