"Keyhole Garden" traces the sprawling romance of a man and woman whose love for each other struggles to overcome the divisiveness of life on America's southern border. The film is a timely exploration of the humanity of immigration and the fragility of life through three interwoven narratives: a young boy trying to save his undocumented friend from deportation; an immigration agent unknowingly dooming a former lover; and a cartel trafficker carrying out his last mission.