School children Huntley and Smudger love chocolate and are stunned with everything that is happening around them. They simply cannot believe that anyone caught breaking the law will be fined £6,000 and face up to five years imprisonment. Something is seriously wrong - Reeling from events, they run to the sweet shop owned by Mrs Bubby - a veritable Aladdin's cave of sweets. Every treat imaginable and a lot more can be found on her shelves. When they tell her of the ban, she declares her determination to fight. But what can one shopkeeper do against the powers of the special police? It seems however that nowhere is safe from the new chocolate edict. Nearby, Mr Blades runs the local bookshop - a bibliophile's paradise. When visited by the secret police, the mild-mannered bookshop owner claims to be allergic to chocolate and convinces the errant law enforcers that he would not dream of breaking the prohibition order by keeping books on chocolate. But is there more to Mr Blades than meets ...