The future earth is uninhabitable due to lack of oxygen. A mother Maya (Jennifer Hudson) and her daughter Zora are forced to live underground. They can only move on the surface through advanced oxygen equipment designed by Maya's suspected deceased husband, Darius. At this time, a mysterious man and woman visited and claimed that they knew where Darius was going. Maya eagerly agreed to them entering the bunker. Unexpectedly, the couple's motives were not simple. Maya and Zora had to fight for their survival!