The sequel to the Night at The Museum trilogy, this time taking place in the Briish Museum.
A fragment of pillar from Stonehenge is exhibited in the British Museum, where the effects of the tablet have strange effects on it. The new band of protagonists consist of Amy, Sir Lancelot and Akhaten. They uncover an ancient Celtic plot to bring England to its knees by awakening the dragon Croyne. They eventually defeat the dragon.