Maia D'Apliese and her five sisters gather together at their childhood home, "Atlantis"-a fabulous, secluded castle that their beloved father, the elusive billionaire they call Pa Salt, has died. Maia and her sister were all adopted by him as babies and, discovering he has already been buried at sea, each of them is handed a tantalizing clue to their true heritage- a clue which takes Maia across the world to a crumbling mansion in Rio de Janeiro in Brazil