Mocked, emasculated, and divorced by his wife for being a "paranoid doomsday prepper" obsessed with his high-tech bunker, brilliant engineer Leo is left with nothing. Her new boyfriend, an arrogant alpha-male, laughs in his face. But when the world actually ends, the tables turn instantly. Now, safe inside his impenetrable, state-of-the-art sanctuary, Leo watches as his begging ex-wife and her boyfriend plead at his reinforced steel doors.