The main story is that a writer accidentally saw the headline of a newspaper, became interested in the murderer, and wanted to use it as the subject of his next novel. With the help of his friend Lin Na, he was granted a special one-month visiting period to visit prisoners.
He didn't think that the terrifying murderer was actually a murderer as beautiful as an angel, and he felt very complicated. After returning home and seeing his lover, he couldn't help but reflect on his relationship and career with mixed feelings.