Duncan (Greg Hemphill) and Malcolm (Ford Kiernan) are two Highlanders who work in a lighthouse on the fictional west coast island of Aonoch Mor. Their sketches are usually featured at the start of the programme. Duncan endures pranks from Malcolm while pleading "Gonnae no dae that?" Malcolm's pranks gradually escalated in severity as the series went on, going from simple jokes to excruciating torture of the psyche, including drawing bras and undergarments over the unfortunate man's pornography (seemingly his only form of sexual gratification available) and pretending that he has hanged himself. The final sketch ends with the lighthouse being blown up, Duncan's trademark "Gonnae no dae that?" phrase being spoken as the unfortunate lighthouse keeper watches Malcolm sail away before the lighthouse explodes.