On a sunlit holiday in Mallorca, three women—Lisa, Kim, and Tammi—strike up a carefree connection with four young men—Bluey, Josh, Sean, and Marcus—after an afternoon spent at a resort. The invitation to join the men aboard their luxurious yacht marks a shift from holiday chatter to a more charged, party-driven atmosphere as the group heads out to sea for a night of revelry. The mood begins light, the drinks flow, and the conversations drift into more explicit territory as the sail glides along the coast.
As the yacht glides farther from shore, the initial sense of freedom grows bolder. The group partakes in drugs, and the dialogue turns to sex, with the men testing boundaries and edging toward increasingly explicit topics. It is during this charged backdrop that Bluey describes a disturbing sex act known as a "donkey punch," a moment that foreshadows the gravity of what is to come and how far the group will push the night’s unruly energy. The atmosphere thickens as the friends drift into more intimate moments in the master cabins, where the lines between flirtation and danger blur beneath the influence of substances and the secrecy of the voyage.
In the dim light of the ship, Bluey, while in the act with Lisa, invites Josh to participate and even to record what unfolds. A volatile power dynamic intensifies as Josh, drawn further into the group’s reckless mood, agrees to film and then to join in. With Bluey egging him on, Josh engages in the sex act, and the situation spirals when Bluey, under pressure, encourages a move that leads to catastrophic harm. The result is a fatal blow that breaks Lisa’s neck and ends her life instantly. Faced with the consequences of their choices, the men debate how to handle the catastrophe. They decide to discard the body overboard while the women advocate reporting the incident to authorities, and a dispute erupts over what to do with the incriminating tape that captured the moment.
The boat becomes a powder keg of fear, guilt, and desperation. The women attempt to reclaim control, while Bluey’s tirades and manipulation push the situation toward violence. In a moment of rage, Tammi lashes out and kills Bluey with a knife, creating a deeper rift as the trio of women grapples with the reality of their predicament. The yacht’s tender awaits as the women realize they must escape the escalating danger, but a series of misfortunes complicates their chances. The outboard motor to the tender is missing, a detail that amplifies their sense of being trapped between the sea and the crew they hoped to outmaneuver. A flare is fired, slicing through the tension and drawing the men toward the sound, and the tense standoff resumes with both sides trying to assess their next move.
Marcus is killed in a brutal flare explosion when Kim, reacting to a misinterpreted threat, fires a signal flare directly at him. The blast sears Marcus, and his body becomes another wound in the night’s painful ledger. Josh responds by locking the two women in a room below deck, while Sean urges Josh to request medical help for Bluey. Yet Josh refuses to call for assistance, aware that the tape still exists and could expose him. He instead chooses cruel pressure, torturing Bluey to extract the tape’s location. Bluey endures the torment and finally reveals that the tape is hidden beneath the state room bed, a detail that becomes crucial as the night unfolds.
Tammi, now determined to survive, escapes by smashing the glass door and moving through the yacht in a frantic search for the tape. Her pursuit coincides with Josh’s attempt to retrieve the footage, and the tension between captor and survivor reaches a fever pitch. Bluey, held in pain, pleads for relief, but Josh’s cruelty knows no bounds. The torture escalates until Bluey dies, a casualty of Josh’s relentless pursuit of the evidence that could implicate him in the earlier act and in the murder that now stains the night.
Sean, intent on regaining some control, retrieves a shotgun from Josh and tries to calm the escalating confrontation. Kim, who interprets Sean’s actions as a threat toward Tammi, mistakes the danger and fatally strikes Sean with the propeller of the outboard motor. Realizing her mistake, Kim’s despair pushes her to take her own life by leaping overboard, leaving Josh and Tammi to confront the consequences alone.
With the male threat diminished, Josh and Tammi become the last two aboard the yacht. Josh, fearing exposure and intent on leaving the scene, plans to abandon the yacht and fabricate a tragic accident to return to shore. He readies the tender for departure, while Tammi, clinging to life and the hope of rescue, seizes the last opportunity to end the danger. She knots the mooring rope around Josh’s neck, pulling him toward the sea as the rope tightens and snaps his neck, killing him outright. In the aftermath, Tammi fires a distress flare, signaling that she is still alive and seeking help. She sits on the tender, watching the night sky as the yacht drifts away, a stark testament to a voyage defined by excess, violence, and the fragile line between survival and doom.
