While Harrison and Eilidh share a romantic dinner at the base, a malfunction seals the base for months.
Campbell-Stokes arrives at the hotel; Alistair plans a trip home from the oil rig.
When an osprey decides to nest in one of the radar dishes, Iain plots to fill his hotel rooms with birdwatchers.
An English couple search for some peace and quiet at the hotel; the men at the base work on a new siren.
When the weather station is closed down, RAF Auchnacluchnie inherits the job of recording the weather statistics.
Flight Lt. Harrison begins his post at an RAF early-warning station.