Kai was once a member of the secretive White Lotus Society. He learned his skills from the great masters throughout Asia. He journeyed to the far east where he met Liu Kang who happened to be in America at the time, recruiting to train a new generation of Shaolin warriors. Kai went with Liu Kang to China to become a Shaolin warrior. However his training was interrupted with the invasion of Shinnok and his dark legion into Edenia. Fujinfell from the Heavens, unconscious, about to be killed by Shinnok's Army of Darkness, when Liu Kang and Kai interrupted the demons and saved him.
Kai and Liu Kang joined Rayden in his efforts against Shinnok. Once Shinnok was beaten, Kai decided to wander the Earth on a quest for self-enlightenment. As a blessing, Rayden entrusted his Lightning Staff to Kai.
Oswald eliminated Kai in the opening round.