Kevin and Leo's hacking lands them in serious trouble. Floyd confronts Justin and Tiffany about their relationship and Sonya puts her friendship with Christine at risk.
Kevin sparks a serious security risk when it's revealed he's hacked into a multinational data organisation. The school is in lockdown but Kevin sees it as a chance to prove his skills and turns the situation to his favour.
Justin and Tiffany's relationship is uncovered by a shocked Floyd. After he and Justin get into a fight, Tiffany fears he will tell Vaughan and Allie and decides to take matters into her own hands.
When Sonya's story - a thinly veiled reference to Christine's alcoholic past - gets circulated around the school, it's a race against time to stop it landing in Christine's hands.
Waterloo Road Comprehensive is on the scrap heap. It can be found very near the bottom of every league table there is. Its despondent teachers have given up trying to make a difference as they struggle to cope with their own personal problems as well as their nightmare day jobs. When the current Headmaster has a nervous breakdown, Jack Rimmer is reluctantly thrown into the hot seat. He recruits optimistic, educational zealot Andrew Treneman who wants to give up his comfortable private school job to bring the benefits of his elite educational experience to Waterloo Road.
Together with feisty Guidance Head Kim Campbell the three teachers - all committed in their very different ways - set to turn round Waterloo Road, painful step by painful step. Meanwhile English teacher Tom Clarkson's life is in a mess. He's about to be married to live-in girlfriend and fellow teacher Lorna Dickey and can't face telling her he is no longer in love. But much worse, he has fallen for Lorna's closest friend - drama teacher Izzie Redpath.
Man-eating French teacher Steph Haydock is delighted Jack Rimmer has been promoted - she's always fancied him but now he's headmaster, his powerful, manly charms are impossible to resist.