On the night of her stepfather Gu Beichen's wedding, Su Mucheng mistakenly thought that he was her biological father's enemy. In a rage, she burned the family portrait and left home. Ten years later, she returned as an independent designer, but she didn't know that Gu Beichen had been silently guarding the edges of her life - on the eve of the fire, he was about to confess the truth about his life experience to her. When the ashes of the old photos were still cold and the new hatred was unresolved, the two faced off again in the dim light. The brush in her hand was the apology he had never dared to say.