Kazuya Mishima learned that the Devil Gene is connected to the ancestors,who are given by an ancient demon,Azazel & was located in the tomb.

Later,Jin was recruited by Nina Williams to search for the source of the Devil Gene. She informs him that the astrologist,Zafina knew about this tomb since it was protected by her ancestors. At the pool,Panda relaxes while Xiaoyu(in her lavender one-piece swimsuit)went swimming & run into Jin's cousin,Asuka(in her light blue bikini),who challenge her to a race,to which Xiaoyu accepts. They were later showed up by Emile de Rochefort,also Lili(in her white bikini),who darted past them. Jin informs Xiaoyu & Asuka about the tomb. Asuka declines while Xiaoyu accepts.

At the Lab,Bryan Fury,who was killed by Jin,has awoken as a revived cyborg & kills the scientists & fatally wounded Doctor Bosconovitch. Before dying,He informs Yoshimitsu what has happened & bring his creation,Alisa to find Bryan. Fury was later recruited by Heihachi Mishima,who survived the explosion,to hunt down Jin & Kazuya,along with Kunimitsu,Feng Wei,& the bear,Kuma. When Asuka came home,She noticed her house is trashed & her father laying down on the floor,dead.

Yoshimitsu & Alisa meets Lars Alexandersson,leader of the rebel army against the Tekken force & the G-Corporations,& recruits Armor King,Roger Junior,Mokujin,& Alex,a genetic dinosaur made from the DNA of an insect & the deceased Roger. They even met an agent,Raven,who is suspecting that Jin,Xiaoyu,& Panda are sent to the tomb.

Jin,Xiaoyu,& Panda met Claudio Serafino,leader of the Archers of Sirius,who knew about demons. They even met Zafina,who took them to the tomb where they found a sphere that seals Azazel. Jin notice that Azazel could bring the entire world in darkness if he's free. They try to abandoned the plan,but Nina & her men storms in & took the ,Kunimitsu,Feng,& Kuma appeared as well. Jin,Xiaoyu,Panda,Claudio,& Zafina are saved by the rebels,but not before Kuma is smitten with Panda. As they fled,Lars reveals to Jin that he is the son of Heihachi,who had a child with a Swedish woman. They soon learned that Heihachi has set up another Iron Fist Tournament will begin. Jin,Xiaoyu,Armor King,& Yoshimitsu decided to enter. Heihachi has Fury,Kunimitsu,Feng,& Kuma to enter.

The First Round round begins:

*Xiaoyu vs Lili

*Asuka vs Feng

*Paul Phoenix vs Kuma

*Craig Marduk vs Marshall Law

*Armor King vs King

*Yoshimitsu vs Bryan Fury

*Michelle Chang vs Bob

*Steve Fox vs Hwoarang

*Christie Monteiro vs Kunimitsu

*Jin vs Eddy Gordo

*Kazuya vs Miguel

*Baek vs Lei

Xiaoyu gets beaten by Lili while Asuka won against Feng,but before she learns that Feng is her father's killer. Kuma,Craig,Yoshimitsu,Michelle,Steve,Christie,Jin,& Baek won. King beats Armor King,who turned out to be his brother,the original King,who was shot by Fury. Kazuya overpowers Miguel,killing him. Fury & Feng are arrested by Lei. Steve was confronted by Nina,who reveals that he was genetically made from her while she was in Cryo.

The Second Round begins:

*Asuka vs Lili

*King vs Marduk

*Michelle vs Christie

*Baek vs Kuma

*Steve vs Yoshimitsu

*Jin vs Kazuya

After Lili,King,Michelle,Baek,& Steve won,Jin fights with Kazuya,who releases Azazel from the sphere. The fighters fought against the demon,but gets overpowered,except for the two. Baek sacrificed himself to allow Jin to destroy Azazel,but his tried to flee from his destroyed body. Claudio holds off the spirit,allowing Zafina to sealed him into her. Baek dies from his injuries.

Two days later,Alisa tells Lars that Heihachi & Kazuya will stop at nothing to hunt him down. Jin & Xiaoyu stares at the sunset and shared a kiss.