Joo Yeon (Yeom Jeong-ah) and Sung Tae (Tak Jae-hoon) have been the best of friends for ten years, but all that is about to end. In consolation to the news of yet another friends' holy matrimony, the two lonely friends drink the night away - only to discover themselves cuddled up on a motel bed the next morning.

Both are determined to dismiss the incident and in their fervent vow to keep their friendship unaffected, they drink some more, only to wake up in the same motel the next day! Accepting it as divine intervention of some sort, they agree to tie the knot. At first the transition seems quite smooth, but they soon discover that married life isn't all that it's cut out to be. Temptations are everywhere. With a sexy publisher breathing down Sung Tae's neck and a sleek advertising director sweet-talking Joo Yeon, the newlyweds just wish they were single again.