Plot Summary:Sergeant John Rook (Mark Addy) is an overweight out of shape police office, when his commanding officer receives a complaint from a Bishop about an incident between Rook and a member of the public, he is given a choice - Resign for health reasons or face a disciplinary panel. Rook chooses the latter, but in the meantime Chief Inspector Custer is determined to make things difficult for him and assigns him to a trial mounted officer project otherwise known as Bike Squad. The Chief Inspector and other officers are not keen on the idea and wish to see it fail, so they assign officers to it that are regarded as bumbling, stupid or too independent to work within the police force. John's life take a turn for the worse when one of his team reveals information about his family that he wasn't aware of due to his estrangement from them. With his life spiralling downward, other officers at the station regarding the team as a huge joke, John and the bike squad must decide whether to start working ...