Make your own script. Watch the film and transcribe, as a playscript, a short section or sections of the text - choose sections in which something happens. Get them to learn and perform. Keep it short ie 2 or 3 lines each but no more. Do scripts for pairs and then fours. And/or get them to act out parts of the story to the rhythm of part of the sound track ie physical theatre. Physical theatre - the telling of a story without words. Keep it short!