Oldboy revolves around Wu Zheng, a pilot with a high-flying job and enviable good looks. He is more than capable of taking responsibility for the lives of countless passengers but outside of work, he is tameless and free-spirited and basically a child at heart. His son named Xiao Han turns up out of the blue followed by teacher Lin Xiao Ou who's more than eager to help out. Needless to say, their arrival shakes up the life of a jet-setter especially since Pilot and Teacher had met once before when they were abroad, and it wasn't pretty.—mydramalist.com

A handsome commercial airline pilot Wu Zheng "Liu Ye" and a beautiful but temperamental, elite private school English teacher Lin Xiao Ou "Lin Yichen" meet by chance in Australia in rather unpleasant circumstances. Their relationship starts off on the wrong foot but the fate will make them cross paths many times.—Wikipedia