Amber came to Korea to visit his cousin, Victoria Song. He meet Yunjin a four year old kid,which is his cousin's godchild and is temporarily under her care. They doesn't get along well at first. When Amber found out that Yunjin doesn't know who his father is, he decided to help Yunjin search for his father. But what if Amber fall in love to Yunjin's mother which is Krystal Jung? Will he continue to help the kid find his real father or just ask the kid's approval for him to be his new father instead?