Tsumugi, a human working in the dining hall of the demon lord's castle, is actually a reincarnated person from another world. Having been a homeless person on the verge of death in her previous world, she does her best to protect her dream life, where she is guaranteed food, clothing, and shelter, and strives not to lose to the scary-looking demons with fierce appearances. The manga is a romantic comedy about otherworldly cuisine set in a demon lord's castle.