The novel takes "healing" and "humor" as its core, and revolves around the heroine Cheng Zi and her "Orange Cat Office" opened in the alleys of the old city. Orange, a girl with a strange brain circuit, negative hands-on ability but full of empathy, takes three "problem cats" - Fat Orange "Lucky" who is addicted to touching porcelain, "Prince", a puppet with a cold and vicious tongue, and "General" Maine who loves to demolish homes. They guard a cat shop that can both pet cats and help people solve their "little troubles". There are no earth-shattering events here, only the chaos in the neighborhood and the strange behavior of the customers: the man looking for the cat lost his dentures, the girl who wanted to heal her lovelorn was forced to make jokes by the cat, and even the owner of the coffee shop next door came to ask for help on "how to make the cat accept her new boyfriend." Chengzi, with three "mythical beasts", battles wits and courage with the cats in his ridiculous daily life, while warming everyone who enters the store in a clumsy and sincere way. The cat shop has gradually become the liveliest and most healing "secret base" in the old city, hiding countless warm stories about love, companionship and growth.
