Barry the Rescue Engine is the first volume of the New Railway Series.
Thomas greets the new engine (Barry) who arrived on Sodor to work with the Breakdown Gang. Barry misses the Welsh Railway he used to run on, so Thomas tries to make him feel more at home.
Thomas and Duck are discussing switchback rails, when Barry overhears them and tells the a story of his days in North Wales.
Barry visits the Sodor Search and Rescue Center to help out Belle and Harold, but he feels overwhelmed due to the center's fast-paced atmosphere.
Thomas and Percy are stuck in the Vicarstown Sheds for the night, and become frightened by a mysterious figure lurking around outside. Percy believes that it is a demon the Small Engines told him about.