Hyun Jong Hyun (Yoo Seung Ho) works part-time at the Naeil Bookstore, but his dream of being a successful webtoon writer has been hampered by his emotionally-wounded, self-centered personality. On one rainy day, he meets a kindred spirit, a stray cat he brings home and names Bok Gil. From then on, Bok Gil (voiced by Han Ye Ri) becomes his only confidant. Though she can’t offer advice, Bok Gil is a faithful source of comfort and support as he goes through difficult times. The story is told from both Hyun’s and Bok Gil’s differing points of view.