Winter of 1971, Sokcho Airport Pilots Tae-in (HA Jung-woo) and Gyu-sik (SUNG Dong-il) are set to fly to Gimpo. Under the guidance of flight attendant Ok-soon (CHAE Soo-bin), passengers are busy boarding.
However, shortly after takeoff, a homemade bomb explodes, turning the cabin into chaos."From now on, this plane is going to North Korea." Yong-dae (YEO Jin-goo), who intends to hijack the entire plane, takes control of the cockpit and threatens the pilots to change course.
Due to the explosion, Gyu-sik loses sight in one eye, and in the chaotic cabin, Tae-in faces a life-or-death situation. They begin a desperate struggle to safely land the aircraft.