A novice caver is trapped in a flooded passage; a helicopter crew strives to rescue an injured hiker from an inaccessible crevice; Australian fishermen are stranded miles from shore in shark-infested waters.
A freak accident severs a cyclist's artery miles from medical help; a kayaker fights to rescue his friend from white water rapids; a skier gets buried alive.
A kayakist in New Zealand struggles to save his drowning friend. French snowboarders race against time to find the friend who has been buried by an avalanche.
Tourists struggle to survive after a ferry capsizes; an injured caver is trapped where only dynamite can save him.
A rescue team fights through a storm to reach a fisherman whose hand has been ripped through a winch; and a crevasse opens up under a group of climbers.