The drama is about the "4 men restart" romantic love story that unfolds when the bad and charming best-selling novelist Oh Dae-woo (played by Sun Haojun), the perfect but stingy "national boyfriend" actor Yoo Jin (played by Song Zonghao), the youthful and heart-warming physical education teacher Oh Yeon-woo (played by Gu Zicheng), and the scary but sexy financial representative Gu Botao (played by Kim Minjun) suddenly appear in front of the heroine who has been an unmarried mother for 14 years. Song Ji-hyo will play Lu Aizhen, who became a producer of a film company. She has experienced various cheating since she was a child. When 4 men appeared in front of her, her life gradually wavered regardless of her will.