Mia Kurihara (Saki Takei) is an employee of the publicity department of a jewelry company. She has been dating her boyfriend Yota (Mitsuomi Takahashi) for many years and they have always had a very good relationship. Mia is full of longing for her future married life. She firmly believes that she can deal with family and work freely. One day, Mia received a proposal from Yota, but Mia couldn't be happy because Yota insisted that Mia should quit her job after marriage and concentrate on being a full-time wife. He couldn't accept his wife working while taking care of the family. In desperation, Mia ended this long-distance love affair. She was exhausted physically and mentally and could only put all her thoughts into work. After that, Mia met a man named Miyoshi Haili (Hideaki Takizawa), who was her boss and the vice president of the company. As time went on, Mia gradually fell in love with the mature and steady Haili, but she didn't know that Haili was already married and had a family. Between emotion and morality, Mia had to make a choice.