Because of family changes, three children who are not related by blood become each other's new family. The three siblings who grew up together as childhood sweethearts experienced together and supported each other. They were not frustrated by the ups and downs, nor did they retreat because of the long road ahead. However, the psychological problems caused by the original family followed them like a shadow. They longed to be loved, but were more afraid of losing. And the people who had hurt them once again broke in, trying to separate them under the banner of family. On one side are the new family members who recognize and cherish each other, and on the other side are the biological parents who cannot choose to have an indifferent relationship. They made a difficult choice but still lost one thing for the other. They don't want the new family to be hurt, nor do they want their lives to be dragged into the abyss. Faced with a dilemma, they faced it bravely and tried to make their parents face their own problems. In the love of different relationships, they taught themselves to grow and clarify their hearts. Only by facing the influence of the original family and healing each other in the name of family can they go on soberly and fearlessly and become better themselves.