Tom and Benny suffer from Gemma Raven's terrible curse – they hate each other, without knowing why. And the curse is spreading – their school friends are drawn into the conflict, and even their parents are at each other's throats. Can friendship overcome the darkest powers of magic?

Tom faces his greatest challenge yet, when a mysterious elevator takes him to Floor 13 – a destination leading far beyond this world. While Benny struggles to understand this ancient trap, the Nekross arrive, ready to feast – only to discover that Floor 13 has terrible plans for them too…

Trapped in a distant dangerous realm, Tom and Lexi must find ways to survive together – but is their friendship capable of becoming something more? While Benny summons Ursula to fight the gruesome Troll, Tom must do more than fight; he must become a man. But will the cost of returning to his old life be too great?