Even after endless research, the human mind remains a mystery to this day. Unknown to the public, there are special individuals capable of diving deep into people's minds and even manipulating their memories. Blessed with this ability, Hiroki, Tsukasa, and Satoru are among those who use their power to commit crimes under the orders of their leader, Katsuragi. The three enter the dangerous territory of the human mind to destroy their assigned targets while striving to keep their own minds and memories safe.