Finn's been through so much, he'll now be allowed do what he wants with the rest of his life, right? Wrong. Whether he likes it or not, he's going to be made a proper Legend Hunter. But people are disappearing, Legends are appearing where they shouldn't, Broonie's complaining, Emmie's got a secret and an attack so big is coming that Finn has the weight of the world on his shoulders - the weight of two worlds, actually!.