Kim Jong-soo

Mild-mannered Tae-jung is wrongfully imprisoned for a heinous crime. He soon discovers that a mysterious figure named Yo-han orchestrated his downfall. Fueled by vengeance, Tae-jung sets out to make Yo-han pay.

Pilots Tae-in and Gyu-sik are set to fly to Gimpo. Under the guidance of flight attendant Ok-soon, passengers are busy boarding. However, shortly after takeoff, a homemade bomb explodes, turning the cabin into chaos.