The hunt for a serial arsonist that is torching condemned buildings intensifies when a Private Investigator, who is an ex-cop and an old friend of Hooker's, is murdered. Certain that the man was on the verge of finding out who is behind the attacks, Hooker and Romano work with his daughter, who is also a PI, to bring the arsonist to justice.

On Stacy's first week of field training, Hooker assigns her to tough veteran officer Jim Corrigan, who has a low opinion of female cops after his former partner was killed while partnered with one. Meanwhile, Hooker has a personal concern in catching the culprits of a series of violent mini-mart robberies in a factory district, when his ex-wife Fran is badly wounded in a hold up and is in danger of being left blind as a result.