After winning the lottery, Su Wanyue accidentally enters a novel she has read, becoming a misunderstood supporting actress. Originally intending to return to reality by following the plot, she realizes through her interactions with Xiao Jingchen, Shen Xinrou, and Chuntao that those around her possess genuine affection and choices. She lets go of her selfishness, treating others with kindness, equality, and responsibility, helping Shen Xinrou become independent and practice medicine, and protecting Chuntao; Xiao Jingchen also goes from guarded to sincere, firmly choosing her. Learning that the collapse of the plot will bring disaster, Su Wanyue is willing to sacrifice herself to preserve everyone, and Xiao Jingchen tracks her down and joins hands with her to rewrite the ending. The entire drama conveys positive values of respecting others, autonomy of fate, sense of responsibility, and genuine affection.