FBI agent Gretchen Blair is on a routine flight to Washington, D.C. when she finds herself seated next to a nervous man named Terry, who confides that their plane is about to be hijacked. Terry reveals that he has stolen millions of dollars and is being pursued by a ruthless group of criminals. If the hijacking occurs, he offers Gretchen millions to protect him and ensure his survival. As the plane takes off, it quickly becomes clear that Terry's fears are justified; the sophisticated hijackers, led by a relentless mercenary named Sharpe, set their plan into motion. Gretchen, thrust into a deadly game of cat and mouse at 30,000 feet, must use her training and wits to navigate the chaos.

Caught between saving herself and protecting the innocent passengers, Gretchen's challenge intensifies as the hijackers grow increasingly desperate and violent. Throughout the unfolding crisis in the sky, Gretchen attempts to unravel the intricacies of the plot against Terry and uncover whether anyone on board can be trusted. Her sense of duty collides with her instinct for survival as she confronts an escalating series of perilous encounters. As tension mounts and options dwindle, high-stakes decisions must be made to avert disaster and survive the nightmare unfolding mid-flight.