Chen Xisheng's father is a mystery novelist, and his mother is an ordinary piano teacher, but she was involved in a case and disappeared ten years ago. He was admitted to the Acting Department of the Film Academy, but he studied criminal psychology in his spare time and never gave up looking for his mother. One day he accidentally discovered a strange book. What was shocking was that after ten o'clock at night, the words on the book came alive...
There is a person in the book who calls himself Yin Chenxia and is a detective in the 23rd century, and this book is a detective training manual written by him. This manual had just been successfully developed, but unexpectedly it was lost during a trip through a wormhole. It fell into the 21st century Earth, fell in the backyard of the Shen family, and was picked up by Shen's father. From then on, Yin Chenxia in the book became Shen Xisheng's personal product.