The relationship between Rachel and Gene remains strained as Charlie shows her mom how much she’s grown. Meanwhile, Neville gives Jason a determined proclamation.

Chandler and his crew finally returns home, where a former D.C. power player is fending off a dangerous warlord who threatens her hopes of restoring law and order in society….

Rachel and Chandler ask for six volunteers to participate in human trials of her vaccine, but the tests could be a living hell as the virus and the vaccine do…

Chandler’s leadership is put to the test when the ship’s propulsion system is in danger of breaking down, the crew becomes overworked and exhausted, and Dr. Scott could potentially lose…