Mu Yuchen was abandoned at an orphanage as a child. Later, her adoptive mother took her in, and she thought she'd finally found a family. Instead, she fell into an abyss and stopped giving her heart away so freely. In high school, she met a warm, gentle boy, a stern boy who resembled her, and two close girlfriends. Life was hard, but the warmth of those around her nourished Mu Yuchen, and she gradually lowered her guard, clinging to the brief comfort they gave her. But how could the abyss let these young men and women go? Because of old grudges between their parents and their own desires, danger slowly closed in on Mu Yuchen and the others. What would become of the warmth they'd once shared?