She is the all-around handyman of the crew, and he is a top actor, and he is also the most familiar stranger in her contract marriage. In a stunt scene, he kissed her in public, but the coldest declaration of breaking off the engagement fell on his lips. Everyone laughs at her that she can't become a phoenix even if she climbs a high tree, but they don't know that he keeps her in the dark every night: "The play is over... Now it's time to talk about our lifelong contract." When the stand-in secretly encounters a childhood engagement, in this intertwined drama within a drama, who will fall first?