San Francisco District Attorney Allyson Russo hires Chance to protect her against anyone who doesn't want her to get a testimony from a member of Whitey Doyle's gang, which has immense corrupt connections. Indeed, SFPD detective Wes Gibson would have killed her if Chance hadn't guessed in time. So they go in hiding while chased by bad cops. Guerero must find a way to remove a bothersome bug. The plot thickens when a family connection proves to chance everything.