Heihachi Mishima develops a rejuvenation serum and hosts another King of Iron Fist Tournament after consuming it. Meanwhile Lee Chaolan, under the guise of Violet, is working on a new version of Combot. After it's completed and it finishes the simulation test, the Combot explodes and destroys the lab. Violet decides to use the other functioning Combot to complete the tests. After completing five tests, Violet kidnaps Jin, Kazuya and Heihachi for Combot's final test.