A month ago, a new young female writer who was only 22 years old wrote the pen name of Catnip for Looking for Cats. After investigation, her real name was Jin Moyun, and she was found tragically dead on the downstairs of the Central Building. This caused a sensation in the society and also attracted the attention of the special case team. The only one who knew the truth was the author's sister Jin Mohan. However, the sister who knew the truth did not choose to tell the truth and get the murderer due legal sanctions, but chose to take revenge and seek justice for her sister.