Detective Tze Wei is handling an assault case. When the police arrive at the scene, the victim Nicole decides not to press charges against the perpetrator, stunning Tze Wei.

Ordered to do administrative work, Tze-Wei receives an unexpected call for backup from a rookie police officer, Chia-Hao, who is investigating the case of absconded migrant workers. Disregarding protocol, Tze-Wei rushes to Chia-Hao’s aid.

The body is identified as Jia-Jia, a young woman linked to Chi-Hsiao. While Tze-Wei and Chia-Hao suspect a police cover-up, Chi-Hsiao is already one step ahead of them.

Hu Ta-Dong kidnaps Tze-Wei but refuses to reveal his motive. Tze-Wei eventually escapes, but her escape turns her into a murder suspect: She is accused by Ching-Yao of killing his classmate. In the middle of his tense election campaign, Chi-Hsiao insists on helping Tze-Wei. Unbeknownst to him, they have a connection in the past that cannot be untangled.

Chi-Hsiao continues to quietly help Tze-Wei. He also wants to figure out why Ching-Yao would frame Tze-Wei. Although he's unable to convince Ching-Yao to tell the truth, the misunderstanding between him and Tze-Wei is finally resolved. The two discover that Ching-Yao is threatened by Ta-Dong. It seems that everything is being controlled by Ta-Dong...