"Jason, Julia, and Rick have crossed through the Door to Time into ancient Egypt, a land of labyrinths, riddles, and secrets. But when the passageway collapses around them, Julia ends up back at home, in the present--with the door shut tight behind her. Now the boys are trapped in the past, and there's just one way to get back to Argo Manor. They must find the long-lost map of Kilmore Cove hidden somewhere in Egypt's Land of Punt. And to do so,...

After a mix-up with their hotel reservations, three children (Harvey from New York, Mistral from Paris, and Sheng from Shanghai) must room with the hotel owner's daughter, Elettra, and soon the four discover that they all have leap year birthdays and a shared destiny. When a strange man bestows upon them a briefcase packed with clues, the children set out about Rome to discover the mysterious Ring of Fire, an ancient and unwieldy power.