Ten-year-old twin orphans discover an old wooden chest in the attic that can only be opened by solving the riddle on the lock. The twins are caught up in a series of dangerous magical events including an unfortunate accident with a fire-breathing dragon and a fateful meeting with the sorcerer who would determine their future. But nothing has prepared them for the surprising consequences of their discoveryâ€"entry into the magical world of witchcraft and the beginning of the greatest adventures of their lives.