Mr. He, your wife is not someone to be trifled with.

The female protagonist runs a shop in a small alley, often solving all sorts of problems for various people. Even though she sometimes faces retaliation for her nonsensical remarks, she manages to barely make a living. More importantly, she must protect the only shop left by her grandfather and find a way to find the murderer who killed him years ago. Until she accidentally learns from a customer that the clues from that year are related to the wealthy He family.