Peanut Butter Sandwich Katagiri Sayo is an office lady at a large IT company who believes she can get everything if she works hard for it. Morimoto Miharu is a nurse whose hopes of getting married to her long-time boyfriend Ryota are fading. Yamashita Miwa is an office lady at a bank with such low self-worth that she immediately gives her body if asked while Matsuoka Akane is a confident and proud company secretary with some past although she is so stunningly beautiful that people would turn around. These four women begin searching for their marriage partners in a bid to secure their own happiness. The government’s secret organisation Peanut Butter Sandwiches, which supports matchmaking, starts to take action. Are these four women with different views of marriage waiting for encounters that will change their lives, or…?