Two police officers and a flight attendant perform CPR at the scene of a motorway accident in a bid to save the life of a lorry driver who has had a cardiac arrest at the wheel. Elsewhere, a young boy falls from a tree, and his mum, a doctor, calls mountain rescue for help.

A teenage girl crashes into a bridge during a go-kart race. Her anxious parents are watching in the stands. Also, a kayaking mum and daughter are stranded on mud flats after getting caught out by the tide. As night falls, a major rescue operation is launched to save them.