Atlas, the emperor of Ceria, invaded the once prosperous planet of Rennaya, searching for the Legendary Rennayan. A being capable of bending the will of all four elements; fire, ice, earth, and electricity.

Before the invasion, the king of Rennaya gathered the blood of over a billion of his people. Synthesizing and experimenting with it, all to recreate the legendary being. He then entrusted his young son, Osei, with the task of bringing his sibling to life, on Earth.

Osei accomplished the mission and kept the Earth safe, but was captured in the process. Twenty years passed and Osei returned to Earth, as a runaway slave. Shaking Tobi's world with his real identity and awakening the dormant powers within him. The only problem is, Earth is no longer safe...