Trapped as a servant in the faeries' underground kingdom of Mistei, Kenna must help her new mistress undertake six deadly trials, one for each branch of magic: Fire, Earth, Light, Void, Illusion, and Blood. If she succeeds, her mistress will gain immortality and become the heir to Earth House. If she doesn't, the punishment is death - for both mistress and servant. With no ally but a sentient dagger of mysterious origins, Kenna must face monsters, magic, and grueling physical tests. But worse dangers wait underground, and soon Kenna gets caught up in a secret rebellion against the inventively sadistic faerie king.