Qiangzi, a Chinese teacher in Busan, went to Jeju Island for a relaxing trip with his three good buddies who came all the way from China. Wild gangsters, sexy Korean women, obsessive old policemen, mysterious followers, and incongruous priests appearing one after another sent their long-awaited journey into a spin. At this time, the appearance of a mysterious little black pig pushed everyone to the brink of death... Who is the real "bad guy" that should die?...

Da-eun (Ye-jin Son) lives with her single father Soon-man since childhood. Based on the film adapted from the kidnapping and murder of a child 15 years ago, she finds that the released phone recordings of the suspects are so similar to her father's voice. She tries to investigate her father's past. At this time, a man who seems to know about Soon-man's ulterior past appears, bringing darkness to this seemingly ordinary family....