Back in school, a dare brought him to her and he tried not to let go. After school she moved away abandoning him. Now he's a famous idol and she's back. But she didn't come back for him. And she's not alone. How will Yoo Kihyun handle his schooldays crush now a mother trying to be friends with his mother? Does he make a move? Does she admit why she had to move away? Or will her toddler make the decision for them both?