Jeon Jungkook, he's a young handsome teacher in nursery. He's a billionaire but he chose to be a teacher with small kids. He's cold to others but he has a soft spot for children. And you are a famous rich young CEO. You have a son named Seol, you're a single mother. Today, you got a call from Jungkook, your son's teacher.

"You must be Seol's mom." He spoke in his cold tone.