Marny is taking a well-deserved holiday in Siena, Italy. However, almost before he's settled in to a posh hotel, a new art display in a local gallery starts to turn hordes of tourists into zombies. With the Sprite Squadron spotted in the town he's sure who's behind it, but as he soon discovers these are not just ordinary zombies, and he can only hope that Russell can get there in time. Will Russell have what it takes to defeat the powers of the mysterious artifact known as the Sneevla? For this time, not only will there be a clash of friend against foe, but friend against friend...