What the Moon Saw (1990)

Steven Wilson is sent to Melbourne from the outback to spend his holidays with his Grandmother, an old time Tivoli showgirl/dancer. He becomes drawn into the world of the theatre, where the illusion is everything and grease-paint covers up reality. While watching a pantomime of Sinbad, Steven succumbs to the magic of the story and actually becomes the sailor on his greatest adventure ever.