The film opens with a DEA raid on a hidden meth production facility deep in the Louisiana Everglades. As agents close in, the operators dump barrels of purple liquid meth into the swamp, and the drug empire is toppled, sending the remaining team to arrest. The contaminated water begins to affect the local alligators, making them increasingly aggressive and territorial, turning a treacherous swamp into an even greater threat.
Meanwhile, Kyle is a recent college graduate who boards a small charter plane with friends, headed for a secluded spot in the bayou. The trip also includes Madalena Aragão as Alice and Elisha Applebaum as Malika, among others, all hoping to reach a destination that holds meaning for Kyle. Kyle carries an urn with the ashes of her older brother Flynn Barnard, Jamie, and she plans to scatter them at a place that mattered to him. The group’s dynamic reveals underlying tensions: Kyle’s prolonged grieving clashes with her friends’ worries about her emotional state, and the trip becomes a quiet test of loyalty and care under strain.
During the flight, the engine falters and fails. The pilot fights to regain control as the plane loses altitude, aiming for a clearing, but the aircraft crashes into the swamp. The wreckage sinks, the pilot is killed on impact, and the survivors are left stranded among tangled debris and flooded marsh. Kyle sustains a head injury but remains conscious, while several friends suffer cuts and bruises. The group scrambles to assess their situation, salvage what gear they can, and decide who will take the lead in a wilderness that suddenly feels both vast and hostile.
Their first encounter with the mutated alligators confirms the peril: these creatures are more aggressive than the usual swamp predators, pursuing them onto land and refusing to retreat even when cornered. The attacks are swift, brutal, and unnervingly coordinated, and one member of the group dies in the chaos, underscoring that this is no ordinary swamp crisis. In the shock of the violence, Kyle makes a fateful decision: she scatters Jamie’s ashes in the contaminated water, hoping to honor him and perhaps bring some form of closure. The act, however, seems to stir the environment itself, drawing more of the drug-enhanced gators toward the living, breathing remnants of the accident.
With dwindling supplies and mounting danger, the survivors push deeper into the maze-like waterways, using pieces of the crashed plane as makeshift rafts and improvised weapons. The mutated gators strike with increased strength, speed, and persistence, often appearing in coordinated groups rather than as solitary hunters. Each new encounter forces the group to improvise and improvise again, trying to stay ahead of the beasts while keeping the group together.
As the threats mount, Kyle begins to experience hallucinations and guilt-driven visions of her dead brother, a psychological strain that threatens her judgment and leadership. Arguments flare as some survivors question her fitness to lead, while others insist they must press on despite the danger. The survival ordeal becomes as much a battle within as it is a battle with the swamp’s monstrous residents, testing loyalties and resilience in equal measure.
In a turn toward answers, the group discovers the abandoned drug facility where the initial contamination occurred. They uncover evidence of meth production, which explains the unnatural behavior of the alligators and the extent of the ecological damage. Yet this discovery comes too late to avert more encounters with the enhanced predators, who have claimed portions of the facility as part of their territory.
The climax centers on Kyle’s hard-won resolve: she confronts both her psychological turmoil and the physical danger of the mutated gators. In a desperate gambit, she uses the remaining aviation fuel from the crashed plane to construct an explosive trap, sacrificing their last chance of signaling for rescue to eliminate several of the most aggressive creatures. The blow buys time and space for escape, but it comes at a great personal cost.
The resolution follows Kyle as the sole survivor, adrift on debris as she drifts toward what may be civilization. She processes her grief over Jamie in the quiet, hard-won solitude of the open water. Yet the final moments hint that the contamination has spread beyond the initial site, with more mutated creatures visible in the distance. Kyle’s survival comes with deep psychological scars and a heavy sense of responsibility, suggesting that the environmental disaster and her own grief will continue to haunt her long after the screen goes dark. The film closes on a somber note: endurance is possible, but at a high moral and emotional price, and the swamp’s altered ecosystem lingers as a warning of what lies beneath.
