The gist of it is that four
teenage orphans (if you can call
actors approaching 30 as teenagers) each find a «Golden Ticket» (a la Charlie and the Chocolate Factory) that takes them to the vaunted Willy chocolate factory, where they are treated in a not - too - kind fashion,
only finding their means of escape through a large wardrobe (see Chronicles of Narnia) that, upon entering, takes them to the land of Gnarnia.