Man in Love (Korean: 남자가 사랑할 때; RR: Namjaga Saranghal Ddae; lit.

Tae-il is a low-level thug who goes around the streets of his neighborhood in Gunsan, collecting debts for a loan shark and harassing shop owners for the protection money owed to the small gang he works for.

Tae-il does well at his job and doesn't seem to harbor many scruples about it, but then he meets Ho-jung, a bank clerk who is taking care of her debt-ridden, terminally ill father.

During their first encounter, Tae-il forces her to sign a contract that requires her to sell her organs if she can't pay back her father's debt on time.

Ho-jung rejects his offer at first, but knowing that she is unable to make the payments at any cost, she reluctantly agrees.