Sent on a mission to retrieve an ancient hidden map, the key to a legendary treasure trove, pirate captain Alosa deliberately allows herself to be captured by her enemies. Now the only thing standing between her and the map: her captor, the unexpectedly clever and unfairly attractive first mate Riden. Her power to enchant with song makes her a formidable foe-- Alosa is only half-human, the daughter of a pirate king and a siren.