Ji Sung deals with the untimely death of Young Jae. Whang Wei takes medicine that brings about a heart attack and Do Kyung attempts to have Ji Sung arrested at the airport.

Ji Sung tries to find the man responsible for a friend's murder. He believes Do Kyung is a criminal but later discovers she is the new Head of Operations for the airport.

Ji Sung tries to adjust to working at the airport full time as Do Kyung adjusts to his new position at the airport.

Do Kyung confronts Nan Young about her manipulation of flight times .

After a suicide attempt of the daughter of North Korea's top politician, the hospital becomes a special security area, and the NIS bans any access. This creates conflict within operation headquarters. Myung Woo hears from Hye Ryeon that she entered illegally to meet her lover, and she asks Ji Sung to help her. However, Ji Sung coldly refuses to. Meanwhile, Do Kyung freezes when she sees Yi Kyung, but she turns away and leaves. Later, Do Kyung looks for Yi Kyung again while Yi Kyung watches.

The airport is under tight security and several planes are grounded when there is a issue with some annoying birds.