Unexpected circumstances arise in Min-soo's life, when he can no longer live with Rooney ahead of his marriage with his fiancée who is allergic to dogs.

Together with his cousin, Jin-guk (Cha Tae-hyun) who owns a cafe that went bankrupt, Min-soo decides to find a new family for Rooney.

On their journey that starts in Seoul and continues to Jeju Island to find the perfect owner, the two encounter the heartbreaking reality of abandoned pets.

Director-screenwriter Jason Kim wrote the story of the film based on his experience of separating from his dog, which he had been raising since childhood.

[3] Initially, in June 2019, Choi Woo-sik and Gong Myung were confirmed to star in the movie and the filming was expected to start in the second half of that year.