In the fictional Scottish Highlands town of Glenntannoch, Dr Gordon Urquhart leads a mountain rescue team, whose major missions and incidents are based on real life ones conducted by the Lochaber Mountain Rescue service.
McLanaghan is keen to get back to work, but Helen isn't so much. The team are called to rescue a hand glider entangled in cables, and a man who has fallen into a waterfall whilst out rambling with his wife.
Bayliss goes to the rescue of a construction team whose Land Rover has plummeted down a cliff. McLanaghan receives the all clear to return. Ben and Annie attempt to rescue a climber who has fallen down a mountain whilst stealing falcon eggs. Annie goes to see Ben to see why he's avoiding her.
McLanaghan continues to have nightmares. Whilst out on a run, Peter and Ben find a man walking in a daze with cuts to his face. Morrison is upset to witness Adam's fiancé rejecting him.
The team come to the rescue of two climbers who have fallen from a rockface. Bayliss and Morrison make a video for a dating agency. Morrison is called for her annual assessment by Peter, but Doughan has been asked to do it instead.
Doughan participates in a cross-country cycle race with his friend Ian, but when they get into an argument, Ian falls into the river below. When Doughan climbs down to help him, he ends up falling himself.
Four teenagers wander into a drain that belongs to an old dam to have a party, but during a thunderstorm, water seeps into the drain, trapping the group inside. One is identified as Betty's son Jason, and Annie discovers that the others are in the sixth form at the school where she teaches.
Tunick helps a tour guide trying to organise a ramble with two patrons with impaired vision, but whilst en route, the guide has a heart attack and the patrons are left alone. Foolishly, one of the partially sighted women wanders off, believing that they have more chance of being rescued that way.
Urquhart and McLanaghan are involved in a serious accident together. Meanwhile, the team receive news that following heavy snowfall, an avalanche has occurred up on the hills, and two young skiiers have been reported missing.
