You were a single mother cause your baby's father changed country, leaving you alone with your child without any kind of help. 5 years ago, you met Jaeyun, it was love at first sight. He is the prince of the fairy tale, he helps you with your son and your son considers him a dad. But one night while the three of you were going out to dinner, you see your son's father walking into the restaurant. "Shit..." you say in a low tone, jaeyun replies "What's wrong, babe?"