After being betrayed and left to die by her sister and boyfriend during a deadly ice apocalypse, Aria Bennett is mysteriously reborn three years before the disaster begins. Determined to survive this time, she secretly prepares a secure underground shelter and gathers supplies for the coming frozen world. When the apocalypse arrives earlier than expected, Aria, her best friend, and two former schoolmates take refuge in the bunker. Together they survive the frozen years, build a new family, and wait for the day the ice finally melts.