When bridezilla-to-be Zara's hen-do is interrupted by the end of the world, she and her four fellow working-class West Midlander best mates wait out the breakdown of human civilisation in an isolated holiday cottage in Wales.

Emerging from quarantine into the harsh new post-apocalyptic world, they find the male population has almost entirely wiped out and Britain is now a hellscape in which only the very fittest will survive. It's inevitable on a hen do there'll be fractious dynamics between friends so how will they come together to work out what to do with the male stripper, the only man who seems to have survived? Pitted against a group of radicalised Pilates instructors and using sex toys as spears against the enemy, will the dysfunctional friends survive in the harsh new world of societal breakdown?