CHUI HIN (Har Yu) indulges in smoking and this becomes the sparkler of quarrel between him and his wife PING. As PING finds some successful case in giving up smoking and CHUI's health is deteriorating, she forces him to stop smoking.

One day, CHUI hurts his leg when he goes to buy cigarettes. PING locks him up. CHUI becomes hot-tempered and he secretly lites a cigarette. PING is angry and they quarrel and even Tight. In chaos, PING faints and CHUI thinks that she has been killed. Therefore he commits homicide.

After this CHUI is brought to another world. Here the rules are of polar different as those smokers are regarded as normal while non-smokers are treated as criminals. At the beginning he wants to quit smoking as he feels guilty. To his surprise he finds that he does smoke in this world while PING is a smoker. PING forces him to smoke and this recalls his unpleasant memory.… ...