친절한 선주씨

After graduating from art school, kind-hearted Seon Ju works as a designer at a local interior design shop. With her income, she supports her husband, Jeon Nam Jin, enabling him to pursue a master's degree abroad and build a career as an architect. However, Nam Jin shows no appreciation for her sacrifices. While studying overseas, he begins an affair with Seon Ju's high school friend, Jin Sang Ah. Nam Jin eventually leaves Seon Ju and joins Sang Ah's father's company, Jin Architects, in hopes of securing a future with her. Bored with her loyal husband, Kim So Woo, Sang Ah becomes captivated by Nam Jin's untamed charisma. Knowing that Nam Jin is Seon Ju's husband only deepens Sang Ah's intrigue, and she declares her intention to leave So Woo. Shocked by the sudden split, So Woo gradually finds himself drawn to Seon Ju, who has also been similarly wronged. In this tangled web of relationships, will Seon Ju and So Woo be able to exact gratifying revenge on the two who betrayed them?