One birthday. Three housemates. A whole lot of surprises. Mollie, Phoebe and Skye have been inseparable since they met at university. Living together presents all sort of joys and trials, and tonight is no different: its Phoebe's birthday, and theyre hosting a dinner. Things are about to be shaken up by something they never expected to have in common, and, with the arrival of their guest, the girls find themselves forced to confront their attitudes towards dating, relationships and each other head-on.