One mistake and your life is over. Making a difficult decision isn't always the right decision just because you're happy. A family adopts a newborn boy. They immediately fell in love with him and are happy, dreaming of raising him to be a wonderful person. At some point, the wife makes an important decision on her own. She knows that the child has a sister and brother. She wants to preserve her son's family ties. She finds a family who abandoned their child and offers to communicate for the sake of the children. Consent has been received. But when she makes an important decision alone, the woman realizes that cracks have appeared in her happy life. And a few years later an accident occurs. A boy falls out of a fifth floor window. Mom went to the store, leaving her child with those who were once his family.