On the eve of his 40th birthday Dennis is making one last attempt to break away from his middle class life – Tupperware parties, Weight Watchers and wife swapping all seem too difficult. When next-door neighbours, Roger and Jane, arrive for his party bearing gifts that embody everything that he hates about his life, Dennis is finally pushed over the edge. As he packs his rucksack and attempts to unleash his roaming, rebel spirit against the housing estate life-style that holds him down, he suddenly becomes aware, much to his horror, that others around him are just as keen to join his suburban exodus!