Lost Wolves of Yellowstone unearths one of the most daring wildlife experiments in American history—the reintroduction of wolves to Yellowstone National Park after a 50-year absence. Told through long-lost 16mm archival footage, the film captures the tense early days of the project as a small group of Canadian wolves, held in acclimation pens, prepared to reclaim a wilderness that had nearly forgotten them. As biologists fought legal battles and public outrage outside the park gates, the wolves faced their own fight for survival within. What unfolds is a visceral, real-time portrait of ecological rebirth, political resistance, and the untamed spirit of nature given one final chance to return home.