Yuko Kawashima is a highly skilled lawyer beloved by the common people. One day, she finds herself in a legal battle against unscrupulous construction company owner Kakiya, prompting her to launch an investigation to uncover the truth. After obtaining solid evidence of Kakiya's illegal activities, she is ambushed by the Kumo-kawa gang who learn of her discovery, and Yuko is kidnapped. This incident marks the beginning of her struggle and a test of her convictions.