Significant Other

A mysterious red object crashes into a forest, signaling the start of unusual events. A deer in the vicinity is suddenly ensnared by a tentacle, hinting at the alien presence in the area.

Ruth and Harry, an unmarried couple in a six-year relationship, decide to embark on a camping adventure. Their trip showcases a blend of love and tension as they explore the beauty of nature.

Harry proposes to Ruth at a picturesque overlook, hoping to solidify their bond. However, Ruth, overwhelmed with anxiety and memories of their discussions about avoiding marriage, panics and declines the proposal.

The rejection creates an awkward tension between Ruth and Harry, casting a shadow over their camping trip. The strain from the proposal looms as they continue their hike through the woods.

As they stroll through the woods, Ruth and Harry come across a deer engulfed in a strange black substance. Harry speculates that the deer is suffering from some ailment, but Ruth's curiosity drives her deeper into the woods.

Driven by newfound hope, Ruth ventures into a nearby cave and discovers a blue puddle, which inspires her to change her mind. She reveals her desire for Harry to propose again, seeking to mend their troubled relationship.

Returning to the scenic overlook, Ruth's emotions take a dark turn as she unexpectedly pushes Harry off the cliff. This impulsive act leads to his fatal fall onto the rocks below, altering the course of her life forever.

In her confusion and grief, Ruth encounters another couple who attempt to help her grapple with her feelings. Their kindness is short-lived, as a disguised alien version of Harry emerges, resulting in their shocking murder.

Ruth learns that the blue puddle allowed her to witness Harry's dead body, revealing the truth that he has been replaced by a malignant impostor. This realization deepens her horror as she navigates her emotional turmoil.

The alien version of Harry takes Ruth to a beach, showing her its spacecraft and urging her to escape Earth's impending invasion. The offer puts Ruth in a morally complex situation as she considers this otherworldly escape.

In a moment of desperation, Ruth stabs the alien and lures it into the water where a shark awaits. The ensuing chaos allows her a brief chance to escape, making a daring bid for freedom.

Though Ruth initially escapes, the alien manages to kill the shark and pursues her relentlessly. It captures her and cocoons her, absorbing her personality and mimicking her appearance, compounding her struggles.

Ruth breaks free from the cocoon and confronts the alien, leading to a tense confrontation. In a fierce struggle, she shatters the alien's head with a rock, attempting to reclaim her freedom.

Despite Ruth's victory, the alien's head begins to regenerate, indicating that it is not finished yet. Ruth flees, knowing the threat is still looming as she navigates her way back.

As Ruth drives away in her vehicle, the alien ominously communicates with her through the car radio. The skies darken with red objects falling, signifying the larger alien invasion that is yet to unfold.