After impulsively pocketing an ancient clasp during a failed robbery at the British Museum, Max finds he has embarked on a terrifying roller-coaster journey back into Britain’s Dark Ages and the twilight of the old Celtic gods.

But he is not alone. The enigmatic Dr Morris will stop at nothing to possess the clasp he needs to complete his cataclysmic plans. Max and his companions race against time, against the odds and across the ages to stop him and prevent Morris’ evil plan that could mean the end of humanity.