There’s danger lurking in the depths of the lake. Ace learns this early—when his twin brother cruelly devours his tail and leaves him for dead. Separated from his family, Ace is cast into a perilous waterway. He is wary of trusting others, but his survival will depend on it as he navigates treacherous algae blooms and hunts for food while he waits for his tail to regenerate. And when he stumbles upon a glowing green axolotl named Ariel, he learns that, with training, axolotls can develop an incredible power: immortality. With high rewards come unspeakable risks, and Ace has been hurt before. But the potential to cheat death might be too hard to resist.

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This action-packed adventure explores the strength that develops through adversity as Ace confronts bullying, betrayal, poisoned waters, and vicious predators, all while forming lasting bonds with the courageous axolotls he meets along the way.