Airport is a national border that links one country to countries all over the world, including South Korea. The link for Korea is Incheon International Airport. Passengers, freight and airplanes take off and land at this place. With 30,000 airport employees working to keep the airport open 24 hours a day. 21 government agencies are located on the airport premises. Airport is more than just an airport: It is a small city. Just like how one airplane part is essential to the safety of the whole flight, every single person who works at Incheon Airport plays an important role in handling the airplane take-offs and landings. "Aircity" is a story about these dedicated people. When your plane ticket is processed and board a plane after having a seat assigned to you, then the pilot will navigate the plane to your destination. After your plane lands, you need to go to the exit gates.