In Season 1, prawn trawlers face a winter storm, John Buchan takes a risk in the North Atlantic and newcomer Ryan Morrison tries to impress his boss on board a highly successful trawler.
In Season 2, prawn boat Amity gets caught in a storm 100 miles from shore and Jimmy Buchan ignores the concerns of his first mate and enters the jagged contours of the Ooze Hole to fish.
In Season 3, Charlie and Charles McBride brave force 11 storms, Jimmy Buchanan learns his engine will cost £70,000 to repair and Chaz Bruce endures a nightmare trip in the North Atlantic.
All three episodes from the fourth series of the documentary show focusing on the lives of fishermen operating off the Scottish coast. The programme follows the struggles of the fishermen and their families as they try to make a living from an increasingly competitive business with an ever-dwindling supply stock.