Andy and Lance are members of the small but dedicated Danbury Metal Detecting Club (DMDC), who search for buried treasure with metal detectors. As boring club president Terry welcomes new member student Sophie Andy and Lance determine to look for the rumoured Saxon hoard on farm-land owned by eccentric Larry Bishop, a man once suspected of killing his wife. The pair visit Larry, now a befuddled old man, but he does tell them of an archaeological dig halted by the outbreak of World War Two and allow them to search his land.

Andy and Lance perform at the open mike evening but Lance is upset that Maggie does not come to support him whilst Andy's insistence that his girlfriend Becky should not turn up to see him looking foolish leads to her believing he is having an affair with Sophie. They decide to tell Terry that they have permission to dig up Larry Bishop's land and, as an ex-policeman still determined to catch Larry for the suspected murder of his wife, he is happy to join them. Unfortunately the result is rather explosive.

Hospitalized after unearthing the UXB Terry decides to retire as club president, nominating a reluctant Andy to succeed him. Next day Andy and Sophie find a gold coin on Bishop's land and share a chaste, celebratory kiss before the army arrives to declare the land out of bounds whilst they look for more bombs. Angry that Andy was with Sophie and not him when he found the coin Lance forms his own pub quiz team comprising Maggie and Tony, who beat Andy, Sophie and Becky - the deal being that the loser not only stands down as president but resigns from the club.To make matters worse for Andy somebody sends Becky a photo of him kissing Sophie and she leaves him.

Andy passes his interview but keeps the fact a secret from Becky, which so annoys her she considers leaving him, whilst Lance is worried that his overly effusive actions have lost Kate forever. The pair discover that Peter is an impostor whose real interest is in unearthing a cache of gold coins in collusion with Simon and Garfunkel and without a licence to do so. A nocturnal stake-out results in Simon and Garfunkel being arrested though Peter escapes.