Алоса is an impertinent and fearless girl that allows to steal itself and retain in a captivity aboard the "Night traveler". A sly plan worked, and she succeeded to get to the den of enemy, to carry out the intentions. In remote past there was a map that divided and passed to three piratic lords of that time. Алосе coming to find failing piece, and then, uniting all parts, she will be able to find a legendary island Канта. He keeps quite a bit secrets and untold wealths, protected by magic inhabitants - sirens. The plan of girl appears under threat of exposure, when helper of captain Райден begins to suspect something. But Алоса will lead to a mission to the end, and nobody will be able to stop daughter of king of pirates.