Miho and Junhee meet as the maid of honor and best man at their friend’s wedding rehearsal dinner.

Seeing Miho feeling sad about saying goodbye to her roommate and best friend, the bride, Junhee misunderstands and assumes she’s secretly in love with the bride.

That night, unable to ignore a drunk and passed-out Miho, Junhee takes her home.

The next morning, the two wake up to find traces of something that happened the night before—something neither of them can remember.

“Ms. Mihoho, let me explain. There’s nothing you need to worry abou—”

“What’s the point in digging into something we can’t even remember?”

Miho brushes it off, saying they should just call it even since she’s the one who got drunk and made a mess.

But Junhee still feels uneasy.

“Let’s just say I owe you one, Ms. Mihoho. I’ll even write you something like an IOU.”

Miho cheekily accepts his “IOU” as a one-time-use coupon for Kim Junhee, and after sharing a hangover soup, they part ways on good terms.

But not long after, Miho finds herself needing to use that coupon.

“I really need a boyfriend right now.”

Meanwhile, Junhee also happens to need a date for his first love’s wedding.

Since Miho’s into girls, he figures things won’t get messy later, so he makes a counteroffer.

“Do you like traveling to France?”

“…Is there anyone who doesn’t?”

“Perfect. Want to go with me to Normandy?”

A “fake” relationship begins between the two.

But before they realize it, something real starts to bloom.