Aspen Matthews was born of two worlds – the ocean and land. Now, deeper within the confines of The Earth, a new threat has risen, one that will reclaim the eco-system for those of much more powerful descent.
The human world has tenuously learned to co-exist with the underwater species known as the Blue. The powerful Elite Blue, Aspen Matthews, has returned to her life’s work – that of a marine biologist. Yet, not all creatures from below are seeking peace, and when an unimaginable force from the deep confines of the Earth’s core makes their presence felt in a catastrophic way, Aspen and the entire Fathom Universe must unite in order to not only save themselves, but the entire planet!