Mu Yuchen was abandoned in an orphanage since she was a child, and was later adopted by her adoptive mother. She thought she had a family, but she didn't want to fall into an abyss and no longer freely surrendered her feelings. In high school, I met a warm and genial boy, a cold boy who was similar to me, and two good girlfriends. Although life was hard, the warmth around him nourished Mu Yuchen. Mu Yuchen, who gradually relaxed and nestled in the short-term warmth. But how could the abyss let these young girls go? Because of their parents' grievances and personal desires, the danger gradually came closer to Mu Yuchen and the others. Where did the warmth of the past go?