Second-year university students Yaso (male) and Makoto (female) are a cohabiting couple attending the same school. Dreaming of marriage, they face strong opposition from their parents. Determined to overcome this by getting pregnant and having a shotgun wedding, they begin documenting their journey on camera starting July 2014, strategizing to conceive. They carefully track Makoto's fertile days, limiting themselves to just one intense creampie session per month. To ensure high-quality sperm, they impose a strict rule banning masturbation. Though this disciplined cohabitation is challenging for the young couple, they endure it for the sake of their planned pregnancy. In return, they focus on making their once-a-month sex life deeply passionate and fulfilling. Repeatedly taking pregnancy tests, they continue to receive negative results—month after month—until nine long months pass. Finally, a positive result appears! Will their dream of a shotgun wedding come true?