Jung-wan (Lee Tae-ran) and Hee-soo (Lee Mi-yeon) are good friends who have known each other for many years. However, their personalities and life situations are completely opposite. Jung-wan is still unmarried because she enjoys the freshness and excitement brought to her by one relationship after another. She is enthusiastic about pursuing her career and regards it as the most important thing in her life. In front of her career, marriage, family, and children can all stand behind. Hee-soo is just the opposite. She got married very early, gave up her job and devoted herself to her family. Her abundant financial resources allow her to pursue a high-quality life to her heart's content. Everything around Hee-soo is so delicate and docile. One is a workaholic who is careless and unkempt, and the other is a housewife who is extremely particular about eating and dressing. When the two women come together, what kind of dazzling sparks of wisdom will collide?