During his youth, Park Chulsoo fell deeply in love with Sowon, who had a fondness for animals. As a result, Chulsoo also developed a love for animals. As they grew older, Chulsoo pursued a career as a zookeeper while Sowon became a groomer and eventually married a veterinarian. However, a year later, the zoo where Chulsoo worked was set to close down, and he was determined to find a way to save it. His motivator was the memory of his beloved Sowon. This webtoon has been made into a movie.