Carter and her father Julius come visit Sadie. They visit her because she lives with her grandparents and because they don't want Sadie with her dad. So they are here for a visit.
Julius is going to take his daughters where the explosion happened and where his mother died. He will try to explain why his mother died, but he couldn't because another attacked happen in the British Museum.
There was an explosion at the British Museum where it blows up the Rosetta Stone, breaking free the five imprisoned ancient Egyptian gods and goddess, Isis,Osiris, Horus, Set, and Nephthys. Then Julius gets taken by the gods and imprisons him in a tomb.
The sister's uncle Amos gets them and takes them to New York and explain everything to them. He told them that they come Egyptian magicians and that the magicians need to be brought back to speed.
Sadie and Carter travel across the world to get there dad, defeat set, and get the book for the symbols of Osiris.
When Sadie's and Carter's father game them the symbol of Osiris, they didn't know what to do with it so they hid it in a locker in a random school, so when someone with the same blood of the pharaohs, can find it and they know where to go and understand what it means.