The Hybrid Squad: Invasion

[BOOK 4 OF THE HYBRID SQUAD SERIES]

An ancient evil, rumored to be created before the universe was, is imprisoned by the last remaining factions of the realms and beyond. Billions of years later, when the last of the factions that imprisoned them died, the enemy faction began their journey to the most vital planet in the universe: Earth.

After a serious disaster at the academy breaks loose, a series of portals were opened across the solar system, most of which were orbiting Earth. When all hell breaks loose, the remaining defenders of the universe must band together and stop the forces from taking control of the multiverse.