Female lawyer Liu Zhiyan (Jin Yunzhen is acted the role of) business ability is outstanding, keep the record that has never lost a lawsuit, she lives with daughter Enying, pour all love into the latter body. At the sports meeting held by the school, Enying was kidnapped in the chaotic flow of people. At first, Liu Zhiyan was warned by the kidnappers for calling the police, but the next day, Liu Zhiyan finally learned the kidnapper's purpose: he was not for the money, but asked Liu Zhiyan to defend a suspect. A month ago, a young woman was killed at home and her body was dumped. Zheng Tiezhen became the biggest suspect because she left fingerprints and footprints at the scene. In the first trial, Zheng Tiezhen was sentenced to death. Now there are only four days before the second trial. Liu Zhiyan found police officer Jin, a primary school classmate caught in a disciplinary case, to help, and quickly launched an investigation into the case. as all kinds of evidence surfaced, Liu Zhiyan found that there was something wrong with the case. And the secret behind the case only reveals the tip of the iceberg.