A group of warriors assembled by Raiden defend Earthrealm from invaders who enter through portals from various other dimensions.
The Defenders of the Realm face a pack of invading cybernetic units led by Sektor and Cyrax.
The team discovers that a rift has opened up in an ancient burial ground in the Tibetan mountains.
A new dangerous enemy, the Raptors, appear before the Earth warriors.
A strange energy emission in New Guinea leads the Earth Warriors to Rain, Kitana's ex-fiancé who was thought to be long dead, sparking jealousy in Liu Kang.
Sub-Zero goes out to meet with his friend Smoke, who unexpectedly returns after being gone for many years.
When Kano begins creating unnatural portals to intentionally torment the Earth Warriors, they realize that the Black Dragon gang is back again.
In a battle against Shokan warriors, Sonya acts with overconfidence.
Quan Chi comes upon the gem of Tetsurri, a magic crystal with which he is able to awaken all the evil in a human soul.
Shao Kahn resurrects Shang Tsung and entrusts him with a sphere that controls the elements of nature.
There is a battle between Kitana and Amazon leader Zara in the realm of Ilkan, following the death of Kitana's mentor, Ramath.
Sonya and Sub-Zero try to find out the plan of the Black Dragons, but they are attacked in an abandoned theater.
Jax is tired of the endless battles and elects to quit the team, retiring to his deceased grandfather's isolated cabin.
In the series finale, the Defenders of the Realm prepare for the final battle with Shao Kahn's forces on the anniversary of the unfortunate death of Jerrod, the king of Edenia and Kitana's father.