Corydoras is a documentary film that follows Park Dong-soo, a 40-year-old man with cerebral palsy who left his facility ten years ago and has since been living independently. Dong-soo compares himself to corydoras, a species of fish known for cleaning algae from the bottom of fish tanks. Just like a fish trapped in a tank, Dong-soo’s activities are limited and he wants to understand what meaning there is to his difficult life. He returns to the facility where he lived as a child and relives the painful memories he endured there. Poetry was Dong-soo’s form of escape as a child, although he no longer needs it as desperately as he once did, and the film structures the story of Dong-soo’s life in the form of a poem as well. Corydoras is a film that captures the moments of loneliness and longing, pain and anger, joy and compassion.