Please Be My Ear

The man receives a text message from his ex-girlfriend, Seung Yoon, and heads to the motel. At the motel, the man finds the baby that Seung Yoon left behind. He thinks he is his son and gives the baby the name 'Lee Jun' and raises him. While raising the baby, co-workers say they saw the child's mother in the neighborhood and ask him to visit her. The man visits the woman with the baby 'Lee Joon'.
(Source: bifan.kr)