A virtuadoll named Regret has created the world of Redo in order to save people from their past regrets.

While this world is false, the peace people find here seems real enough.

However, this “paradise” is shaken to the core when a virtual idol named χ breaks into Regret's virtual reality and restores a high school student's memories of the real world.

In order to escape Redo, χ and a number of like-minded students form the Go-Home Club, a resistance group that seeks to shatter the illusion that is Redo against the will of Regret and her enforcers, the Obbligato Musicians.