Snow is the twenty-sixth episode ever made in Season 5.
Thomas and Rusty become snowed down by a tunnel. So to pass the time, Rusty tells Thomas a story.
One snowy day, Skarloey was traveling up to the slate mine when he passed through a ravine. His driver was concerned that noise could cause an avalanche, and he sets an emergency cap. When Skarloey runs over it, nothing happens, so his crew decide to make a cup of cocoa. Unfortunately, up in the slate mines, some "empties" jam the winch and some trucks run down the slope into the ravine, causing an avalanche which buries Skarloey. When Rusty comes to the rescue, they discover that Skarloey's heat has created an igloo, and inside they find Skarloey's crew nonchalantly sipping cocoa.
Gordon then arrives with his snow machine, only to be buried when the noise causes an avalanche. Thomas jokes that if Skarloey could emerge from an avalanche laughing, Gordon could at least do the same.
- In various scenes, part of Skarloey's cab roof is snapped.