Cupid cell

Yoongi, a random pickpocket on the streets of Busan, gets sent to jail for a month. When the police arrests him, he's determined to change for good and become a better person. But what if something, rather, someone catches his attention and his intentions change completely.

Hoseok, an innocent soul, who's sentenced to life prison for something he didn't do, catches the attention of Yoongi. He craves to live like a normal human again, but the law restricts to do so. With a lot of difficulties, he tries to gather proofs to set him free, but can't do much from jail. He's determined to get out and maybe, one day his wish will come true.

The 2 men meet and solve their problems together as a team.