The new Dara Park is a good girl. She doesn’t drink or swear, and she has the appropriate number of cardigans in her wardrobe.

Dara believes she has enough distance from the darkness of her past, but when she arrives at college with her best friend, her path to a new beginning is quickly challenged by Seoul University's Walking One-Night Stand.

Kwon Jiyong, lean, cut, and covered in tattoos, is exactly what Dara needs—and wants—to avoid.

He spends his nights winning money in a floating fight ring, and his days as the ultimate college campus charmer.

Intrigued by Dara’s resistance to his appeal, Jiyong tricks her into his daily life with a simple bet. If he loses, he must remain abstinent for a month.

If Dara loses, she must live in Jiyong’s apartment for the same amount of time.

Either way, Jiyong has no idea that he has met his match