A new wave of tentacled terror is heading for Foulwater. Axel is homesick. Yes, exploring a strange new world, discovering new powers, and slaying monsters is all awesomely fun. However, he misses his family, nachos, and whiskey that doesn't taste like tree fungus. Then the kraken attack, led by an army of monstrous mermen who are out for vengeance. Or are they? There are secrets in Foulwater Bay that the merfolk will kill...