Watch the official trailer for upcoming thriller, Significant Other. The movie follows a young couple, Ruth (Maika Monroe) and Harry (Jake Lacy), who take a remote backpacking trip through the Pacific Northwest. However, things quickly take a dark turn when they realize they may not be alone out there.Significant Other will hold its World Premiere at New York Comic Con 2022, and will debut exclusively on Paramount+ on October 7 in the U.S., Canada, U.K., Australia and Italy. It will be available later this year in additional international territories.