Following Adam's recent moments of feeling excluded by people, he is excited to meet Leon, a young man who wants to marry at his church. The two soon become friends and start to do a range of activities together. However the friendship turns sour after an dinner party where Adam discovers his wife Alex and Leon attended the same college and shared a one night stand together, much to Adam's disgust.
Reverend Adam Smallbone is an Anglican vicar who is newly promoted from a small rural parish to the 'socially disunited' St Saviour in the Marshes in East London. Unable to turn anyone away from his new appointment Smallbone is faced with a collection of moral challenges as he balances the needs of genuine believers, people on the streets and drug addicts as well with the demands of social climbers using the church to get their children into the best schools.