This drama tells the story of a cautious female protagonist who suddenly has the ability to communicate with cats one day and reaches a simple deal with the picky cats. It mainly tells a fantasy love comedy story between a part-time convenience store worker and a warm-hearted pilot. Song Ji-eun plays the role of an ordinary part-time convenience store worker in the drama. She is optimistic and cheerful. The person she secretly loves asks her to help look after the cats, and then she suddenly can communicate with the cats. Choi Tae-joon plays the role of Bai Taihua, a cat housekeeper and aviation industry practitioner. The day before the flight, the pet hotel suddenly closed, and he gave the cat to a woman for safekeeping. The Wonderful Legacy was written by screenwriter Kim Kyung-seok