Zuo Ying, a once-renowned criminal investigation expert at Huanyang University and a prominent figure in the legal community, was brought to trial by her own daughter, Zuo Yang, who accused her of crimes. Just as Zuo Ying was about to be sentenced to death, the court abruptly changed her sentence, ordering her to be confined in an insane asylum instead. Due to her success in solving this case, Zuo Yang was promoted rapidly. However, soon after, a series of murders broke out in the city, and unable to solve the cases, she was forced to seek her mother's assistance.

Facing her mother, who had once brought her love but now only left behind a complicated and indescribable mix of emotions, Zuo Yang felt a thin layer of sweat form on her cheeks.

"My darling daughter, if all it takes is a little pleading to get my help, why not?" Zuo Ying said, glancing at the newspaper in her hand, squinting as she smiled. The shackles on her hands were so conspicuous—who really was the caged bird here?