29-year-old Donna is about to settle down and marry her dependable, if slightly boring, boyfriend Karl. Only on her hen night - surrounded by miserable married mothers and single, fun-loving party-girls - does the true horror of her situation hit her. In a moment of drunken clarity, she decides to call the wedding off and spin loose on a mad and thrilling single life. Moving into a shared house with her best friends, sex-mad Karen and lovable dreamer Louise, Donna gears herself up for the most exciting year of her life - a new career, crazy friends and some serial shagging. Instead she finds her voyage of self-discovery derailed by binge drinking, outlandish sexual entanglements and blind confusion. Here the questions come thick and fast - how do you get back money you're owed from a corpse? Who'd volunteer for suicide watch when they've been invited to a great party? And, just because you dump someone, does it really mean you don't care about them anymore?