Thomas and Skarloey's Big Day Out is the 262nd episode and the tenth series finale of Thomas and Friends.
It is summertime on the Island of Sodor, and Thomas enjoys taking visitors to the seaside everyday. One day, Sir Topham Hatt gives Thomas a special to deliver steel pipes to the wharf and Thomas is delighted to see many sights along the way such as the castle, Shen Valley and Gordon's Hill.
When Thomas arrives at the wharf, he sees Skarloey looking very sad because he has broken down and needs repairs. Thomas volunteers to take him across Sodor to the repair yards. Mr. Percival agrees but warns Thomas that Skarloey is heavy and must go straight to the repair yards. He also warns Thomas to be careful because the coupling on the flatbed is old. Skarloey is still sad when he was loaded onto the flatbed, so Thomas decides to make Skarloey's trip exciting by showing him several sights Skarloey has never seen before.
Thomas goes on a different track away from the repair yard to show Skarloey the sights. He shows him the Scottish Castle and Shen Valley, but Skarloey says their railway has places like that and does not cheer up. Thomas takes him to Gordon's Hill struggling to pull Skarloey and he makes it to the top, but the old coupling breaks and Skarloey rolls back down the hill and derails in a siding crashing into the buffers. Thomas puffs back to Skarloey realising his mistake. Thomas is coupled back to Skarloey and heads straight to the repair yard.
When Thomas stops at a signal near the seaside, Skarloey is amazed by the view of the beach and says he had never seen anything like the seaside. Thomas is surprised and happy to hear this and says he sees the beach everyday. Thomas takes Skarloey to the repair yard and waits for Skarloey to get mended. Skarloey is soon fixed and the 2 engines have 1 more view of the seaside. Skarloey declares it the best day out ever and Thomas is happy to see his friend happy.