Series 1

A young hiker gets trapped on an icy ledge on Tryfan, rescuers hunt for walkers lost in fog and a man risks heatstroke after a mountain climb on the hottest day of the year.

A woman needs to be airlifted to safety after a fall in Devil’s Kitchen, a sheep is stuck in a mineshaft, and the police drone unit seeks out a teenager lost on a mountain after dark.

Summer visitors put the teams under strain. There’s a race against the tide to save an injured power kiter; and a freak storm delays an ambulance reaching a medical emergency.

A woman scattering her father’s ashes on his favourite mountain needs help after falling, a man with dementia is lost in the forest; and a girl is stretchered down the mountainside.

A day trip flips from epic to nightmare for a Londoner lost on Tryfan with no way to get help, a man falls near a remote waterfall and a holidaymaker drifts out to sea in a dinghy.

Multiple teams join forces to find a missing person; an amazing coincidence aids a walker who collapses with hypothermia in a storm; and a wrong turn puts young friends in danger.

A man makes a tough decision when a rock crushes his friend in the Glyderau mountains. After a fall, a woman needs convincing to be carried back on a stretcher.

Rescuers search for an injured man they think has taken magic mushrooms; two climbers get trapped on a dangerous ledge with no torches; and a family get lost on a notorious peak.

Teams work together to rescue an injured man trapped in woodland in South Eryri; two walkers get lost when thick fog descends; and the team struggle to find a woman in a mountain’s deep ridges.

A crash in a remote spot brings emergency teams together; helicopter teams winch a seriously injured woman out of a gorge; and volunteers on race day get an unexpected callout.

The race is on to find two climbers stranded in deep snow, before night falls; a spate of wildfires puts fire and rescue teams under strain; and a hiker is caught out, the day after the clocks change.

A thrill-seeker fears he’s led his fiancée to her death on an icy mountain; rescuers help a dog in distress; and a trainee paramedic is in the right place at the right time.