Kung Lao has triumphed in the Mortal Kombat tournament, defeating Shang Tsung and saving Earth Realm. Now, he must train a new generation of warriors for the next tournament. Meanwhile, an exiled Shang Tsung attempts to thwart Lao's efforts with the aid of supernatural warriors such as Scorpion and Sub-Zero.
Taja is pulled into a portal and arrives in the Cobalt Mines, captured by Shang Tsung. Kung Lao and Siro have to save her, even if it means walking into a trap.
Quan Chi sends a trio of women to infect Kung Lao, Taja and Siro with a potion. The potion enlargens their flaws: Kung Lao's temper, Siro becomes a drunk and Taja is a thief again. With the three getting out of control, Rayden has to find a way to break this spell before it's too late.
Shang Tsung forms an unlikely alliance with Quan Chi to defeat Kung Lao. They lure Kung Lao into a realm with everything he could possibly want. But it's all an elaborate trap for Shang Tsung to capture him and leave the Earth Realm defenseless.
An old love from Siro's past, Hannah, turns up in Zhu Zin in search of his help. Hannah reveals she married Siro's estranged brother, Cassar, who has gone missing. Siro is reluctant to help until he learns Scorpion used magic to make Cassar one of his warriors.
Kung Lao is badly wounded in a fight with Rain. With him practically defenseless, Shao Kahn sends Mileena to masquerade as Princess Kitana and finish off the weakened Kung Lao.
A warrior named Tomas arrives, saying he wants to join Kung Lao in defending Earth Realm. All seems well until it looks like Tomas has murdered some barmaids. Has he? Or is there something bigger going on?
