Adam's put on the spot when two of his and Alex's friends ask him to marry them. Of course he'd love to but there's one problem: they're gay and the C of E have a tiny bit of a problem with gay marriage. Meanwhile, Adam signs up for a course on how to save his church - led by Roland Wise. Is Roland's explosive IED (Invade - Evangelise - Deliver) approach to ministry the answer to Adam's prayers? Probably not.
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.