Donald, a schoolboy, struggles with his dual nature, with his devilish impulses proving difficult to resist. However, when he starts smoking, he becomes green and later regrets his decision. Eventually, his good side intervenes, defeats the evil influence, and Donald rejoices.
Donald's Better Self
A man's internal struggle to reconcile his contrasting selves is the central theme of the film, as he undergoes a profound transformation after discovering the devastating impact of smoking on his life.