@Paramount Plus - Significant Other follows a young couple (Maika Monroe & Jake Lacy) who take a remote backpacking trip through the Pacific Northwest, but things take a dark turn when they realize they may not be alone.
FBI Agent Lee Harker is assigned to an unsolved serial killer case that takes unexpected turns, revealing evidence of the occult. Harker discovers a personal connection to the killer and must stop him before he strikes again.
