She was betrayed by her closest big brother and got knocked up by a stranger, she got no idea who the father is. Five years later, her only son had leukemia and needed matching bone marrow to save him. At this moment, three men came to her door, claiming to be the child's father. Looking at the three handsome men with various personalities, She was completely confused. What the..., who can tell her what she went through on that night five years ago!