It all comes down to this.
Loki is taking his battle for power to the world of the Norse gods -- and he's bringing an army of Underworldly creatures with him. Fenrir, the Midgard Serpent, and the horrible seven monsters of Babylonia all play a role. But the starring role belongs to the Norse Ice Dragon, which Owen, Dana, Jon, and Sydney are going to have to defeat in order to thwart Loki's plans.
The stakes are high: Dana's parents are missing, and Pinewood Bluffs is under attack. If the kids fail, the Underworlds might take over our world -- forever. Owen and his friends can't let that happen. But do they stand a chance of stopping them?
Tony Abbott raises the stakes in this final book of the four-book UNDERWORLDS arc, tying together Greek, Norse, Babylonian, and Egyptian mythology in a rip-roaring chapter book adventure.