Adam, a narcissistic actor on the verge of stardom, finds a threatening note on his car, which throws his life and self-image into turmoil just before an important audition and a major TV interview.

Having found the safety of the Greenland bunker after the comet Clarke decimated the Earth, the Garrity family must now risk everything to embark on a perilous journey across the wasteland of Europe to find a new home.