Wei Nuan, a cute and well-behaved girl, is the favorite pistachio of everyone in the school. Because of a very different temperament from her own, she was attracted to the cold and lonely transfer student Lu Qingchen, and used various tricks to try to get close to her. From resisting at the beginning, to gradually being moved by Wei Nuan, Qingchen opened his defenses little by little. They became the closest friends and had countless clear, beautiful and warm moments together. However, with the arrival of Wei Nuan's first love, a boy named Tang Yuan entered their lives, and everything began to become subtle. On one side is a beloved girl, on the other is a heart-throb boy. The innocent Xiao Nuan, who thinks that serious love can warm everything, eventually unknowingly pushes Qingchen, who trusts her and relies on her, back into the abyss of loneliness and indifference.