Ex-CIA agent-turned-vigilante Robert McCall uses his deadly skills once again to avenge the death of a close friend and former colleague.

In the distant future, mankind lives on Mars, in cities that resemble those once found on Earth, protected from the alien atmosphere by dome-like force-fields. When a massive sandstorm breaks through the dome and destroys Mars New York, those in Mars Los Angeles must figure out how to stop the storm before it wipes them out next.