If you thought battling Devil Dinosaur was bad, you were barking up the wrong tree! Join Lockjaw and the rest of the Pet Avengers on a voyage under the sea! Their search continues for the Infinity Gems, and it leads them right to the bottom of the ocean. Can they find the gem before drowning or getting eaten by Giganto? If you don't pick up the third part of this fan-favorite series, you're all wet!