Táto séria sa ponorí do temných hlbín oceánu, kde sa stretáva nebezpečenstvo s odvahou. Sledujte mladú hrdinku, ktorá musí ovládať prastaré morské tvory, aby ubránila lode pred pirátmi a inými hrozbami. Je to napínavý príbeh o prežití, vernosti a boji o kontrolu nad búrlivým morom.
Cassandra Leung--a seventeen-year-old trainer of Reckoners, sea beasts bred to defend ships--is kidnapped by the pirate queen Santa Elena and ordered to train a Reckoner pup to defend Santa Elena's ship.
Three weeks after pledging allegiance to pirate-queen Santa Elena, Cassandra Leung struggles as a pirate trainee while dealing with her feelings for Swift, the girl who broke her heart. When other Reckoners threaten the NeoPacific, Cas must confront her past and decide whether to protect or fight against the monsters she once cared for.