Ling is a high school student who is on a personal mission to save the Mishima family.
In the previous tournament, ling was aved from the evil plans of Heihachi by Yoshimitsu, who taught her the history of the Mishima family. Hearing this, Ling began to believe that the root of all misfortune surrounding the Mishimas started with Heihachi's cruel upbringing of Kazuya.
When Ling heard of the death of Heihachi, a tear came to her eye. "If only I could turn back time..." Ling said with a hint of sadness and regret.
Later, Ling happens to meet a brilliant scientist who claims that he can make a time machine as long as he gets the funding for development.
Under the condition that she will be first to use the machine, Ling pulls out the wadded scrap of paper in her pocket... an invitation to the King of Iron Fist Tournament 5.