To Hui-Won’s dismay, the BFF she had a crush on and her other best friend are now dating! Heartbroken, Hui-Won decides to let loose just once and finds comfort in the arms of a handsome stranger. What begins as a satisfying one night affair soon turns into something much more when she discovers she’s pregnant!

Fate brings them together again, and the disciplined Du-Jun is determined to do the right thing and marry her. But they’re practically strangers! Well, except for the fact that their bodies have already become intimately acquainted. What is this soon-to-be mother supposed to do?