Married for five years with no children, Sawako Saito is troubled by her husband Shun's ED. Her mother-in-law urges her to have a grandchild, but her husband refuses to see her because of his ED. One day, she is approached by Hasegawa, the hottest guy in the company, about having an affair. Sawako is perplexed but does not feel bad, but that night, her husband remembers their wedding anniversary and surprises her by buying a cake.

Ashamed of herself for being swayed by Hasegawa, Sawako makes up her mind to improve their marriage. However, her resolve is short-lived when she discovers an unfamiliar folder of photos on her computer that she has no recollection of. There she finds a picture of her husband, that she has never seen before...!