Jimmy and Kim, still locked in a custody battle over Joey, meet with a court-appointed evaluator and plead their cases in a heated exchange.

When Sully and Tatiana visit his mother at her nursing home, Tatiana expresses concern over the quality and cost of his mother's care. Convinced that she can do a better job of taking care of her at home, she signs her out and moves her in with them. Sully is shocked and displeased, and tells Tatiana that it will be too difficult for her to take care of his mother.

Alex tries to stay busy to avoid dealing with her feelings about her father's death. Eager to fill empty hours and maintain the brave front her father insisted upon when she was growing up, she works extra shifts and even helps Carlos and Ty move into their new apartment. While Carlos is downstairs unloading the truck, Alex takes Ty up on his previous offer to talk and asks him about his father, who also died in the line of duty.

Rescuers find the body of Alex's father, and he is given a hero's burial; Faith and Bosco tail a convicted rapist released on appeal, certain that he will rape again; dissatisfied by Tatiana's explanation of her whereabouts the eight weeks she was missing, Sully investigates further and uncovers some astonishing and heartbreaking facts about his wife; after Chevchenko threatens to kill him if he doesn't roll over on Faith and Sully, Frankie tells Swersky that the raid on Chevchenko's numbers business was a hummer bust, leading Chevchenko to threaten a lawsuit and have another angry confrontation with Sully.

Chevchenko has Tatiana's son killed; Fred comes home from the hospital; and Davis gets a job offer.

Chevchenko has Tatiana's son killed; Fred comes home from the hospital; and Davis gets a job offer.

As Faith waits for Emily to awaken from her coma, she blames everyone but her daughter for the overdose and reflects on the substance abuse problems in her family; after Cruz's sister is brought into the hospital with an overdose, Cruz gets Sully, Ty and Bosco to look the other way on any possession charges and sets off with Bosco to find the location of her supplier's meth lab, where they end up in an inferno when the dealer sets the house on fire; Kim is reluctant to give a statement in Carlos's case because she's feeling pressured to lie to save his career.

The news that Faith is repartnering with Bosco outrages Fred; Bosco overcomes his initial wariness about his brother's claims of sobriety after the tip Mikey gives him about Ecstasy dealers leads to a solid bust; in the wake of the hostage situation, the department shrink sent to debrief the house elicits a range of emotional reactions from Kim, Carlos and Holly as she reveals that Doc is in the Bellevue psych ward on a suicide watch, and that the toll of 9/11 and its aftermath may be at the root of his collapse; when she investigates the murder of an Ecstasy dealer outside a rave, Maritza discovers that the motive may be a turf war between rival dealers; Bosco is distraught when Maritza informs him that the evidence points to Mikey's being a major Ecstasy dealer who used him to eliminate the competition by providing the tip that lead to the raid; Bosco and Maritza set out separately to find Mikey; tragedy occurs when Maritza and Dade pull over Mikey's car outside a rave.