While on her summer break, Morina Nanase starts a new part-time job as a waitress at Trattoria Festa, an Italian restaurant. Finding the restaurant adorable and coincidentally close to her house, Morina quickly settles into her new profession. However, her new job comes with several eccentric co-workers and Italian dishes she has never heard of. The restaurant's typical fare includes a variety of pasta dishes such as penne arrabbiata, rich dessert such as tiramisu, and even caponata. Join Morina in her restaurant adventures as she gets to know her co-workers and serves the best Italian cuisine to her customers with a smile.

In Japanese folklore, a "tsukumogami" is an object that has gained a soul, becoming alive and self-aware. There are two types of tsukumogami: the mature "tsugumomo," who have developed through long years of harmony with their owners, and the aberrant "amasogi," premature spirits that are only born to grant the destructive wishes of certain people. Kazuya Kagami has never gone without his mother's obi after her death. Be it at home or school, he keeps it safe with him at all times. One day, he nearly loses his life when a wig amasogi attacks him. When all seems to be over, his treasured obi defends him, transforming into a beautiful girl. She introduces herself as Kiriha, a tsugumomo owned by Kazuya's mother. With Kiriha's arrival, Kazuya enters a reality he has never seen before, a world with gods and tsukumogami.