Lau Ching Wan was in the force for almost ten years. He was very careless and was termed "Detective Idiot" by his colleagues. One day, he came to the knowledge that his boss, Christine Ng was a lesbian. Nevertheless, they became good friends and treated each other like brothers. Unfortunately, Lau fell in love with Ng's girlfriend.

A brilliant detective is forced into early retirement after losing eyesight. Making ends meet by solving cold cases for reward money, he teams up with a rookie lady inspector to solve a case from her personal past.

A Cantonese librettist enjoys immense popularity over the course of decades, followed by decline.

It all begins with an affair staged at a traditional Chinese funeral offerings store with the leading actress being the boss’s wife. Witnessed by an unidentified pair of eyes, the affair is followed by the sudden death of the boss caused by a bowl of soybean pudding. He is desperate to know the truth about the affair in his afterlife. Eventually he is brought back to the piece of memory that entangles among two boys and a girl, on fighting for their pride through a slingshot battle against the boss of students.