"Theodosia Throckmorton lives in a museum and has a magical. When her brother Theo finds the mysterious Eye of Horus, she discovers the power to perform magic, and she and Henry, Will and Safiya, are drawn into a battle against the Serpents of Chaos. When the Serpents of Chaos are beaten. The discovery of a secret room below the museum, leads Theo and her friends into a new quest."
