100 Years of Men in Love is a tribute to a hidden yet profound history of love—a queer archive that is both nostalgic and full of hope. Based on an extraordinary photo collection accidentally compiled by collectors Hugh Nini and Neal Treadwell, this documentary brings to light photographs of male couples who documented their love in secret from the 1850s to the 1950s in various parts of the world. The collection is filled with intimate, touching, and at times surprising visual expressions of couples who, despite societal pressures, found ways to capture the love they shared. 100 Years of Men in Love not only tells the story behind these photographs but also serves as a powerful reminder that queer love has always existed—and that visibility has always been a form of resistance.