Kai was once a member of the secretive White Lotus Society. He had 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. During the events of Mortal Kombat 4, 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. Liu Kang and Kai found Fujin who fell from the Heavens while battling the forces of Shinnok. The god of wind was unconscious and was about to be killed by Shinnok's Army of Darkness, when Liu Kang and Kai interrupted the demons and saved him.