In a dystopian version of Earth, World War 3 resulted in a Nuclear Winter, wiping out nearly eight billion people and leaving the survivors in doomsday bunkers. Emerging from this catastrophe, scientists discovered Dysonite, a powerful new material that sparked rapid technological advancements. Humanity rebuilt within The Citadel, a dome-protected metropolis governed by a totalitarian regime led by The Council. In this harsh society, genetically modified Synths, like Rael, were created for various roles, including military service.

Rael, born in a lab under New Horizon’s control, underwent rigorous training and brutal trials. After surviving a deadly team fight, she received cybernetic enhancements, transforming her into a formidable bounty hunter. Her unwavering loyalty to New Horizon shifted when she was sent on a time-travel mission to locate Zeta, the elusive leader of the resistance group Ground Zero. However, a malfunction sent her to an alternate timeline—our Earth.

Stranded in a world without the oppressive regime she knew, Rael adapted to her new surroundings. She found solace in video games, comic books, and anime, and began streaming under the alias "Saruei," creating a new life for herself. Her happiness was short-lived in 2023 as New Horizon eventually found and forcibly returned her to her original timeline, treating her as a traitor.

Zeta, having monitored Rael's transformation, orchestrated her rescue and revealed the truth: New Horizon's ultimate plan was to invade the peaceful alternate timeline Rael had grown to love. Faced with the potential destruction of her newfound friends and life, Rael joined Ground Zero to fight against New Horizon and The Council.