A father and son, who have been living off grid for 20 years, encounter an outsider who threatens to destroy the utopia they've built.

Last Survivors takes place in a post-apocalyptic world where Troy raises his now grown son, Jake, in a perfect wooded utopia thousands of miles away from the decayed cities. When Troy is severely wounded, Jake is forced to travel to the outside world to find life-saving medicine.

Ordered to kill anyone he encounters, Jake defies his father by engaging in a forbidden relationship with a mysterious woman, Henrietta. As Jake continues this dangerous affair, Troy will stop at nothing to get rid of Henrietta and protect the perfect utopia he created.