Thomas & Friends: On Site with Thomas (2006)

Sinopsis

Join Thomas and his construction friends as they go on site for more Island of Sodor adventures. See Oliver's exciting discovery at the construction site for the new school. When Patrick announces he is the most important engine, not everyone agrees....how does the team decide who is the most important? Can Kelly save Isobella, and see who is hiding in the forest? All aboard for non stop excitement with Thomas!