On a trip to the city museum, three young boys, Alex, Max and Califax, the Abrafaxe, discover a golden bowl--the part of a legendary Aztec treasure. In spite of Califax's strong objections, Alex and Max examine the bowl more closely and, without intention, set off the secret time-traveling mechanism. Suddenly the world around them disappears, and they find themselves on board a pirate ship--back in the 18th century.