Peterhead boat Westro travels to fishing grounds in the North Sea searching for a bounty of prawns. After an average first haul, skipper James West decides to take a gamble and move fishing grounds. During the trip, there is a celebration on board Westro - James's younger brother and apprentice Stephen West has his twentieth birthday and officially receives his skipper’s licence. This is the last time the brothers will work side by side, so James takes the opportunity to give Stephen a final few lessons and even a chance to manage a haul himself. In the Moray Firth, another two brothers, Michael and Brian Watt, are also at sea, sailing their boat Sardonyx. Fishing close to shore comes with its risks, and the boat is soon snagged on the seabed, listing heavily. Michael must just try to free the boat slowly or risk losing the net or even worse, capsizing. Eventually the boat comes free, and they can fish on. Elsewhere in Peterhead, part-timer Arthur James McKenzie is following in his grandfather’s footsteps by fishing for lobsters just 50 metres from shore. It's more pride that’s riding on his trip than profits as he searches for a prized lobster worthy of his family legacy.