Ma Wei, host of the food show A Big Mouth Eats Everything, is married to Zhang Mingming, the agent of renowned actress Cai Lingling. One day, Zhang Mingming accompanies Cai Lingling to the south to promote Jinde Fu Jewelry. That evening, Ma Wei is dragged by a colleague to party at a nightclub. The next morning, still hungover, Ma Wei finds a necklace on his dressing table. It looks very much like the one worn by a woman at the club the night before. This sets his imagination racing, and he mistakenly believes he got drunk and brought the woman home. To keep his wife from finding out, he decides to destroy all suspicious evidence. The necklace is first on the list. But just after he tosses it into the trash bin downstairs, he gets a call from his wife asking him to bring the necklace to the south. It turns out that the necklace he threw away was a gift from Jinde Fu Jewelry to Cai Lingling. And so one problem after another comes crashing down...
