Min-soo is about to get married when his fiancée suddenly admits that she is allergic to dogs. Now the guy's best friend, the golden retriever Rooney, needs a new family. With the help of his cousin and social media, Min-soo starts looking for a new home for Rooney.
| Actor | Role |
|---|---|
 Yoo Yeon-seokMin-soo | Min-soo |
 Cha Tae-hyunJin-gook | Jin-gook |
 Ryu Soo-youngSang-ho's Father | Sang-ho's Father |
 Jung Ji-hoonSang-ho | Sang-ho |
 Lee Seung-heeSeung-min | Seung-min |
 Park Jin-jooMi-seon | Mi-seon |
 Kang Shin-ilJin-gook's Uncle | Jin-gook's Uncle |
 Kim You-jungAh-min | Ah-min |
 Jung In-sunSeong-kyeong | Seong-kyeong |
 Tae Won-seokMan with Mysophobia | Man with Mysophobia |
 Kim Ji-youngDirector of the Stray Dog Center | Director of the Stray Dog Center |
 Lee Ho-jungWoman on Boat | Woman on Boat |
 Woo Do-hwanHusband | Husband |
 Bae Je-giBar Owner | Bar Owner |
 Kim Yo-hanLee Byeong-heon | Lee Byeong-heon |
 Jeong Eui-soonYoung-joo | Young-joo |
 Im Hyeong-taeOld Man | Old Man |
| LLee Young-hoonPublishing House Employee 2 | Publishing House Employee 2 |