Donor Unknown is a documentary feature that follows the story of JoEllen Marsh, a 20-year-old donor conceived person who is driven to find out more information about her sperm donor father, known only as Donor 150. For more information about the film, including links to the 2005 New York Times article that set the story in motion and the follow-up article detailing Jeffrey’s decision to come forward, check out the film’s official webpage.

The movie is available for rent on Vimeo (and is well worth the $4.99 rental fee!) Take a peek at the trailer above if you need more convincing—or just dive right in and discover the story as it unfolds.