There is an innate Ego that all sentient beings possess. It is said that the closer one gets to their Ego, the more of the world they can see. It is only after one sees the second moon in the sky that they reach a revelation, prompting their awakening as an End Tracer.

End Tracers, those permitted to enter the unknown, make use of powerful mechanical avatars to defend themselves: Phantom Images. With the use of these extensions of their psyche, End Tracers hunt for the secrets resting in the supernatural night life known as the Lemurian Abyss.

Lann Rockfaust, one such End Tracer, decides to chase that secret world's truth. Can he can balance his new supernatural night life with his normal day-to-day life?