Two sisters. One inheritance. A million reasons to play nice. two very different sisters. Once inseparable, they have long been estranged after an unimaginable betrayal. Organised and uptight Frances married the only man she'd ever slept with. But no-one told her that seven years later she'd be having sexual fantasies about everyone from the pizza delivery guy to Denis thatcher. Scatterbrained animal-lover Joni never knew she was so attached to her kneecaps until she thought she might have to say goodbye to them forever. After their beloved grandmother - a game-show addict - dies, they discover that they have each been left one million pounds in her will. the kicker is that they can only inherit if they participate as a team in a gruelling reality tV program, Endurance Island. they can survive the jungle. they can survive the humiliating challenges. But can they survive each other?