All her life, EunJi dreamnt of being the world's best pilot but never would she expect herself to start from the lowest ranking job as an air stewardess. One day she boards a plane scheduled to Japan which is being hijacked by mad men. She takes over the helm as the flight captain after the mad men kill the pilots, armed with only her knowledge.

Hoya, a childhood friend of Eunji, has vowed ever since young to protect her at all costs. Even if it meant his life. One day, he hears the news of a plane crash carrying Eunji and breaks down upon the news that she may not be alive. He swore to never fall in love again.

Woohyun, her arch rival, would jump in to have a chance to defeat Eunji in any form. He has been beaten by her for his whole life, and has since been seen always bickering with her. But has all the bickering flowered some romance?

L(Myungsoo), the silent comforter of Eunji, forever seen by her side as her guardian angel. Can he keep his promise to remain by her side forever?