The film stars Maika Monroe and Jake Lacy as a couple dealing with relationship issues while backpacking in the woods in the Pacific Northwest, whose activities are interrupted by a meteor strike bringing an evil shapeshifting alien lifeform into the picture.

In September 2021, Paramount Players won a bidding war for the film, with Monroe and Lacy already attached to star, and Berk and Olsen to direct.

It is revealed that when Ruth found the blue puddle, she also saw Harry's dead body in a cocoon in the cave, and knew he had been replaced by an imposter.

In September 2021, it was announced that Paramount Players had won a bidding war for the rights to Significant Other, a science fiction thriller script by Dan Berk and Robert Olsen, who were also attached to direct.

[1] Filming took place in Oregon, including Silver Falls State Park, Nehalem, Silverton, Cornelius, Cloverdale, Estacada, Sublimity, Eagle Creek, and Sandy.

The website's consensus reads: "Some surprising touches and a generally thoughtful approach help elevate Significant Other above standard wilderness survival stories.

[4] The New York Times gave the film a generally positive review, calling it "a rich and eventful ride" and writing that it "does not reinvent the genre, but its narrative flourishes make for an exciting outing",[5] while The A.V.