Puff the Magic Dragon

Puff the Magic Dragon is a 30-minute animated television film released on October 20, 1978, based on the song of the same name. The title character was voiced by Burgess Meredith. The doctors were voiced Frank Nelson, Charles Woolf, and Regis Cordic. It was followed by two made-for TV sequels, Puff the Magic Dragon in the Land of Living Lies in 1979 and Puff and the Incredible Mr. Nobody in 1982. 

The film begins with Puff's narration about a little boy named Jackie Draper, who is filled with so much self-doubt and fear that he has stopped talking altogether. His parents are so concerned that they have three doctors examine him, and they say it is hopeless and that little Jackie will never talk again. Jackie returns to his room, where he sits until Puff comes to his bedroom window and starts a conversation with him. Then Puff and Jackie went on their adventures at Hannalee, which is located in the sea. After their adventures, Puff returns Jackie to his room and thanks to his creativity that Jackie is now a brave boy and leaves, saying he will return to visit. Then Jackie's parents come into his room and hug and express their love for him. The film ends with Puff asking the audience if they just saw the dragon walk by, similar to what he asked Jackie at the beginning of the story.