Weatherman Derek Brockway launches the series by firing the starting cannon at the Beaumaris Regatta on Anglesey. His 14-mile walk then takes him into the town's heavily fortified castle before he heads onto the Welsh Coast Path, towards Red Wharf Bay. He crosses the beach with its fascinating selection of rocks and mooring stakes before joining the Beaumaris Rowing Club. Walking on, Derek visits the hamlet of Penmon with its ancient well, priory and dovecot before heading on to the photogenic Trwyn Du, or Black Nose lighthouse, with views over Puffin Island. The walk then turns inland for a couple of miles before arriving at a new stretch of coastal path opened in 2018. Derek chats to a group known as the Silver Slashers, who help to keep the pathways clear, before arriving at Traeth Coch, or Red Wharf Bay. Here, he meets an amateur photographer who specialises in night-time landscapes and natural phenomena like bioluminescence.