勇裕是个平凡再不过的上班族，跟老婆玉儿结缡七年，最近心情开始烦燥难耐，感觉就是俗话的「七年之痒」犯了，每天看着日渐发黄的糟糠妻，勇裕厌倦之心油然而生…正在此时，公司来了个俗称狐狸精的妖艳美女小萍，也不知看上勇裕哪点的小萍，两个居然就乾材烈火起来…。

The story of a Thai-Chinese couple Yong and Ngak who's been together for 7 years. Yong is a salesman while his wife Ngak is just nothing but boring and old. There're many times that Yong thinks of breaking up, but he swore to his grandfather that he will never leave Ngak or else his life will face bad luck. Later, there is a twist in his marriage life as Yong may has to break the word that he promised to his dead grandfather.