Do Hee comes to Sun Hee's place and collapses. She asks Sun Hee for a favor, and Sun Hee decides to pretend to be her sister and goes to work. To make matters worse, she is forced to fly as well. During the flight, she saves the chairman of Donghae Airlines, Oh Pyung Pan, and even runs into the famous pilot, Song Woo Jin. (Source: Kocowa)