"RErideD" is a science fiction anime series set in a near-future world where advanced robotics and artificial intelligence play a central role in society. The story centers on Derrida Yvain, a brilliant engineer who co-develops autonomous military robots with his mentor, Dr. Josef. These robots, known as "DZ," are designed to operate without human intervention, but concerns about their potential misuse lead Derrida to implement a fail-safe mechanism. However, before the system can be fully tested, Derrida and his colleague, Nathan, are attacked by unknown assailants. Derrida is forced into cryogenic sleep to survive, while Nathan is killed.

A decade later, Derrida awakens to a world drastically changed by the widespread deployment of DZ robots, which have now gone rogue due to a flaw in their programming. The fail-safe he designed was never implemented, and the robots have begun attacking humans. Derrida learns that Nathan’s daughter, Mage, is in danger and sets out to protect her. Along the way, he encounters a young girl named Mayuka, who becomes his companion, and together they navigate a world overrun by hostile machines.

As Derrida searches for answers, he uncovers a conspiracy involving the DZ robots and the powerful corporation behind their production. The series explores themes of technological ethics, the consequences of unchecked innovation, and the human cost of war. Derrida’s journey is one of redemption and responsibility, as he seeks to rectify the mistakes of the past and prevent further destruction. The narrative is driven by a mix of action, mystery, and emotional stakes, with Derrida’s relationships with Mage and Mayuka adding depth to the story. The series balances its futuristic setting with a focus on human connections and the moral dilemmas posed by advanced technology.