Sipowicz and Sorenson trace the path of a young man's gun which was used in a homicide and now threatens to destroy his own family, and Andy once again tries very hard to show he's no longer racist in the face of disapproval from the suspect's mom; Kirkendall faces a showdown with Don that ends with theft and Don being killed and burned beyond recognition; and the fraternity of the 15th Precinct promises to remain intact even as Detective James Martinez bids farewell.

Medavoy and his new partner, Detective Baldwin Jones, join Sipowicz and Sorenson as they investigate the peculiar disappearance of two young boys on a trail that leads them to a racist, deranged Russian man. But Sipowicz is a bit skeptical of Jones, the new guy, and doesn't try to hide it. Danny treats Mary Franco dismissively and seems more interested in Diane. Diane and Jill investigate a girl who died as a drug mule and get a suspect to incriminate himself.