Langfeng is one of China's most polluted cities. The idealistic environmental inspector Li is tasked with doing something about it - now! Because, unlike the hesitant West, centrally governed China can actually force through a radical environmental policy. Factories are closed, fines are handed out and discussions are held with the locals. But it is still easier said than done for the kind-hearted Li and his young assistant Hu to reach their goal within the three-month deadline they have been given. 'Smog Town' is a heart-warming and human, but also highly topical film about the dilemma that both China and the rest of the world is facing: climate or economy?