The hens get an unpleasant surprise in a post-apocalyptic mini-mart in Snowdonia. Mother of the bride Bernadette sees a way to turn the situation to their advantage, but it's a high risk strategy, given the secret the women are keeping back at the cottage. In her hour of need, one of the hens gets help from a national treasure.

The hens deal with the fallout of their encounter with their new enemies. Bernadette comes up with an audacious plan to make life better for the bridal party, but it's highly unorthodox, and she faces opposition from the other hens. Shelly tries to make amends for past mistakes but finds herself troubled by unpleasant memories.

Chief bridesmaid Shelly makes a shocking discovery that could ruin everything for the hens. With time running out, she finds an unexpected ally in beautician-turned-inventor Veena and comes up with a drastic plan of action. Bernadette's business proposal takes an unexpected turn after a post-apocalyptic makeover.