Dillinger seems to be the sort of boy that your parents wouldn't want you to play with, but is he being misjudged? When his mother wins a luxury holiday to Egypt, it is a dream come true for Dillinger because he is mad about ancient Egyptian life. Unfortunately they have to take his cousin Kayla along. She seems to be a sweet little thing, but is she? Dillinger and Kayla take a coach trip to visit the Pharaoh's tombs in the Valley of the Kings. They climb away from the official site and make an exciting discovery, but then it all goes wrong. Kayla won't believe Dillinger when he says he has worked out what has happened, but it looks as if it might be true. The more they explore, the more Dillinger knows that he is right. The big problem is, how will they escape?