After the Montemayor and Koh-Madrid siblings enter a strange tower on the kaiju planet, they learn about its dimension-hopping nature and its connection to Earth. But these answers bring more questions as an unexpected being zaps them with energy that will supposedly grant them mysterious gifts. Before they can quite recover, they find themselves back in the company of their chaperone Lucas and under attack by massive canine beasts! Will they survive long enough to find a way home? As they emerge from a vast underground lake, they realize they've been transported to another world, full of super-sized creatures? and even bigger kaiju!