Nain, who excels at her job and has a beautiful face, wants to have a passionate romance with an older partner. However, everyone around her keeps trying to introduce her to younger men instead… One day, as usual, Nain falls asleep burning with the desire to date someone older. Suddenly, a strange doll pops out from behind her and wakes her up! Introducing itself as the Queen of Succubi, the doll makes Nain think she’s just dreaming, so she ignores everything the doll says and goes back to sleep. Angered by Nain’s coldness, the Queen curses her with the fate of living possessed by lustful demons. From that moment on, an unusual heat begins to rise within Nain’s body…!