The Queen of Tancred and her royal retinue are on a mission - to ensure all the citizens of Tancred are happy. But that's a lot harder than it sounds - especially when the Happiness Tour accidentally stumbles into the neighbouring region of Hamelin. Oops. Soon, Queen Mathilde smells a rat. A whole kingdom of them, in fact ... because Hamelin has been overrun with rodents. Why is a rat on the throne? Where are all of Hamelin's children? And what is happiness anyway? The answers - presented in Micallef's signature fairytale-twisting style - will surprise you!