Billy and Dom begin their food exploration adventure in London and decide the first dish they want to learn to master is the Sunday roast. They visit their friend Sir Ian McKellen in his London pub, The Grapes, and reminisce about the past.

Billy takes Dom to his northern homeland of Scotland to see a very different side of Britain.

Billy and Dom are back on their home turf, ready to see what the American West Coast has to offer. Dom reveals his favourite food spot in the city, the Endorffeine Coffee Bar.

Billy and Dom travel to Texas to experience southern hospitality at its best.

Japanese knives are the most sought-after knives in the world. In Kyushu, Japan's south-westernmost island, Billy and Dom learn the art of sushi knife making from one of Japan's leading blacksmiths.