In a post-apocalyptic wasteland, two sisters leave their stronghold to save their wounded mother. Armed only with a muscle car and limited ammo, they race against time and ruthless raiders to secure life-saving supplies from a distant outpost.
Recognizing the destructive power of its captive giant Ape, the military makes its own battle-ready A.I., Mecha Ape. But its first practical test goes horribly wrong, leaving the military no choice but to release the imprisoned giant ape to stop the colossal robot before it destroys downtown Chicago.