Luo San is an orphan who grew up in an orphanage and regards it as his home. But when he was eighteen years old, a man named Leng Leng who claimed to be his brother came to claim him. After that, he met a familiar handsome boy Kaman, Li You and Mo Chen who were responsible for protecting him. He came to Prague with them, but unexpectedly discovered that they were not relatives and it was all a scam. While he was puzzled by all this, his childhood sweetheart Lan Canghai found him and wanted to take him away. Luo San began to waver, but was hesitant. At this moment, he learned a thousand-year-old secret, which made him give up the idea of leaving.
Karman: Thousands of years ago, I lost you. It is enough to experience this kind of pain once, and never lose it again in this life.
Luo San: I am not her, I am myself. Even though you always compare me with her, I still have to tell you that I have fallen in love with you.
Lan Canghai: Why didn't you choose me? Instead, choose the person who hurts you with his own hands.
Li You: I'm sorry, I love you.
Mo Chen: I'm sorry, I don't love you.
Indifference: Forgive me for lying to you, but if I do it again, I will lie to you again.