 It is the day of the annual Midsomer Regatta and Joyce is trying to persuade Barnaby to buy a boat but their peaceful day is interrupted by the discovery of a body in the river. Ladies  man Guy Sweetman was killed after arguing with his rowing club friends Phillip Trent and John Parkway. As Barnaby and Scott dig into the luxury lifestyles of the regatta set, they discover money problems and sexual jealousy are rife. Guy seems to have upset many people - but who killed him?