Yui Hitotsugi is an authorized lawyer at a law office. People began to suspect that politician Seizo Tagane sold public land to a social welfare company in 2010. Seizo Tagane was declared innocent according to his testimony, but the public resented Seizo not being prosecute. Prosecutors met and concluded that Seizo Tagane must be prosecuted. And Lawyer Yui Hitotsugi will be a prosecutor in this case. She began studying the case to help prosecutor Shinji Tachibana.