Dog's friends are planning a surprise birthday party for him and they need a little help from Pig and Frog to gather the letters to spell out C-A-K-E. When Duck befriends a Shark, he learns that the letters S and H make the "sh" sound, and everyone else discovers that you can't judge a shark by his sharp-toothed cover. Pig's pie for Bear has gone missing, but Pig has no fears when Detective Sheep is ready to help her follow the letter clues and solve...

Come along with Thomas and the whole Sodor gang as they go on a hot-air balloon ride, attend a top secret birthday party, have a special surprise at the bandstand, and more.

"Working the arcade on her birthday, Alex soon discovers a masked killer dressed as a mouse is playing a game of his own."--