Twelve-year-old Nell Cafferty didn't ask to be the eldest of five children. Acting as babysitter, bodyguard and bouncer all week long while her parents work has left no room for her ambitions of becoming a wrestling star.

But when her siblings are taken hostage by enormous were-otters, it's on Nell to save them – and she'll do anything to get them back. Even if that means challenging their monstrous king who has terrible ambitions of his own …