A trio of friends from a suburban neighborhood—Alex, Tuck, and Munch—face imminent separation as a construction project is forcing their families to relocate. Amidst the packing and goodbyes, the boys notice a series of bizarre disturbances affecting their cell phones. Curiosity piqued, they trace the nightly disruptions to a map with a cryptic signal that leads them into the Nevada desert. Determined to uncover the source before they part ways for good, they embark on a final adventure together, documenting their journey through Tuck’s handheld camera.

Under the cover of darkness and with childlike excitement masking their underlying sadness about moving away from each other, the friends cycle out to the signal's origin. There, in the depths of the desert, they discover a small, strange, alien-like creature they name 'Echo.' Echo is desperately trying to return home. With government agents closing in, and the realization that Echo is not just a scientific anomaly but a living entity with emotions and a plea for help, the boys form a bond with the creature. They decide to pull their resources, wits, and bravery together to help Echo, unaware of how this extraordinary encounter will test their friendship and change their lives forever.