雜貨店店長阿水與老婆兩人生活平淡，阿水心中一直覺得乏味。某天他背著老婆，找了黃刊上的伴遊小姐想要偷歡。沒想到過程中被伴遊小姐的男友遇到，雖然暫時矇過了醋勁大發的男友，卻又發生連串意外。

A-Tsui, the owner of an old grocery store, is always bored with the dull life with his wife. One day, A-Tsui happens to make a call for a prostitute. He seems to be a little clumsy in the city with the young prostitute before they get caught by the prostitute’s boyfriend.