Finn is standing in a silent, empty street under a boiling white sun. He's back in The Ultimate Adventure! But everything looks strange . . . Where is he? And what does the riddle mean?
Finn sets out to find the answers, and soon meets up with an old friend, Sproggin the dwarf, who has a dreadful tale to tell of cruelty and slavery. Back home, Finn's been in trouble, but that's nothing compared to the trouble he finds himself in now. Very soon he's on a desperate race to save thousands of lives - including his own.