When ten-year-old Tom accidentally smashes a statue in a museum he releases Isis, a young Egyptian princess who has been imprisoned for thousands of years, along with her mummified moggy, Cleo.
Isis desperately wants to break the curse and enter the afterlife, otherwise she'll be trapped between worlds forever. The trio must track down six amulets on a thrilling treasure hunt through time - coming face-to-face with Gladiators, Knights, Greeks, Vikings, Pirates and Egyptian Mummies!
Tom and Isis are sent to Ancient Greece to search for the fourth amulet. They need to get inside the walls of the City of Troy but the Greek army is still camped outside and can't find a way in. Tom decides to speed things up by telling the Chief Commander, Odysseus, to build a wooden horse to hide his army . . .