Amir’s dad has disappeard. Amir and Olav travel to Tehran to look for him. In the Persian Gulf their ship is boarded by pirates and they are taken captive.

The pirates treat them well, but will not release the two Norwegian boys unless they get a ransom. They don’t have time to wait months before someone can get the pirates the money they ask for. With help from Olav’s uncle and Amir’s mother they manage to escape the pirates. But even in their newfound freedom new dangers await.

The Heart of Glass is a standalone sequel to Aslak Dørum’s book, The Golden Raft.