Robson Green begins by travelling around the southwest of England as he goes on a mission to find the conger eel.

Robson travels to the west coast of Scotland for some of the area's famous shellfish fishing and on the Island of Mull, meets local fisherman Johnny.

Robson travels around the Welsh Pembrokeshire coast, where he goes in search of Seabass. In Saundersfoot harbour, Robson meets sustainable fisherman Berwyn, who is lucky enough to own one of the rare sea bass fishing licences.

The actor searches for the tastiest fish in British waters, exploring distinct maritime cultures around the British Isles, examining the love of seafood that has kept the nation fed for centuries and how fish stocks can be preserved.