Han Songyi (played by Jiang Huizhen), who is about to turn 40, still has a blank love life. By chance, she met a man named Zhenhao (played by Bae Soobin). The handsome Zhenhao quickly attracted Han Songyi's attention. The two hit it off and their relationship developed surprisingly smoothly. However, as time went by, Han Songyi finally discovered Zhenhao's secret, that is, in addition to herself, Zhenhao actually had two other girlfriends. Han Songyi, who was furious, bravely stood in front of her rivals. The three women had a drama. In the constant battle of wits and jealousy, a wonderful and solid friendship actually developed between the three. Is this situation of three women serving one man going to continue like this? With such doubts, the plot took a drastic turn.