So
@LittleJerry92 mentioned how the Barney movie feels like just one long episode of the show stretched out . . . but you know what movie adapted from a TV show
really feels just like that? The Pufnstuf movie. It's basically an episode of the show stretched out to an hour-and-a-half with only slightly improved production values, completely different voices, and no laugh track.
However, it
does explain Jimmy's back story, how he discovered Freddy the Flute could talk, and why Witchiepoo lured them to Living Island.