Waterloo Road welcomes Viv O'Donnell, local radio DJ superstar, who has arrived to host her live radio show at the school. Everyone's excited about having a masterclass in radio journalism from a chat show supremo; everyone, that is, except her daughter Andi, a loner in Scout and Emily's class, who shies away from her mum's limelight. Sian and Michael wake up late, having spent the night together ...