The Adventures of Annie and Svetlana Kosakov

The story is about two sisters, who are amateur archaeologists, and their cousins who, with their professor and their twin son and daughter with their father (a famed surfer and adventurer), embark on an adventure towards a lost Mayan city located in the Caribbean sea near Belize and Mexico in search of the twelve masks that others are looking for. A rogue archaeologist and master crime lord and his two goons will do anything to take away the mask and use it for other purposes.