Sadao Maou keeps up his quiet part-time life at MgRonald's in Tokyo alongside his demon general Ashiya. Then a giant apple falls from a portal above their apartment and a small girl climbs out, calling herself Alas Ramus and naming Maou and the Hero Emi Justina as her parents. Neither adult can explain the child's origin, but caring for Alas Ramus pushes the former Demon Lord and the Hero into an uneasy domestic arrangement while new threats from Ente Isla close in. This second season continues directly from the first.