Hiroshi suffered a slipped disc from a back injury. A mysterious, striking woman appeared out of nowhere and escorted him to an Este salon where he received a complimentary beauty treatment and massage. After the session, Hiroshi returned home to find himself transformed into a robot. Shinnosuke celebrated with joy, while Misae fretted upon seeing him as a bare robotic figure. The robotic Hiroshi proved to be highly useful; he could be operated via remote control and handled tasks such as cooking and cleaning with ease. Hiroshi soon discovered that his metamorphosis was linked to the Este salon. In truth, this alteration stemmed from a sinister plot by "Chichi Yure Doumei" – the Association of Fathers – aiming to forge a powerful paternal archetype for all Japanese fathers. As a result, numerous dads nationwide spiraled out of control, causing the Nohara household and Kasukabe to unravel. Just before Kasukabe teetered on the brink of collapse, Shinnosuke and robotic Hiroshi rose to confront the crisis. The film showcases an epic showdown among middle‑aged men, delivering a heartfelt narrative that moves fathers and families across Japan to tears. Their courage inspires communities, reminding everyone that unity and resilience can overcome even the most daunting challenges, and together.