A young female doctor named Katerina boards a night flight with her six-year-old daughter, Diana. The flight is nearly empty, with only a few other passengers scattered throughout the cabin. As the plane takes off, a severe storm engulfs it, leading to significant turbulence. Katerina tries to stay calm for her daughter’s sake, but soon strange occurrences begin to unfold. The passengers start experiencing inexplicable visions that seem connected to trauma from Katerina's past. The line between reality and illusion blurs as disturbing events escalate within the confines of the aircraft.

Tension rises when passengers start disappearing one by one under mysterious circumstances. Katerina struggles to differentiate between reality and hallucination as the visions intensify and terrifying truths come to light. With nowhere to escape in the skies, trust fractures among the remaining passengers, and fear spreads through the cabin. As Katerina digs deeper into the visions, she finds herself reliving haunting memories and uncovering secrets linked to her identity. Racing against time and losing grip on reality, Katerina must confront her fears to protect her daughter and herself from the menacing forces threatening their lives above the turbulent clouds.