When he was thirteen years old, Bai Chen's parents died in a car accident. When he was young, he was transferred to the home of his parents' close friend, Lu Cheng. There, he met Lu Zhe. The eldest brother of the Lu family, a sunny boy who affectionately called him "Achen" when they first met. In the past ten years, youth, love, fate entanglement, separation, reunion... His final belonging is...