Baek Tae Hwa is the owner of the cat and the co-pilot of the airline. He has a good biography and a beautiful appearance that would make anyone fall in love with him. Due to his naturally sweet nature, Baek Tae Hwa often made women cry without meaning to. One day, the pet hotel where he used to leave his cat during the flight unexpectedly closes, so Tae Hwa entrusts his pet to Go Mi Rim.
Go Mi Rim has an ordinary origin and is optimistic by nature. She works part-time at a convenience store while looking for a full-time job. Go Mi Rim agrees to take care of a cat belonging to her one-sided love interest, but she begins to hear the cat's voice after she is struck by lightning, creating a plot for an interesting novel.