Detective Jimmy McNulty finds the body of a woman floating in the water while carrying out his new assignment of Harbor Patrol.

Major Valchek gets back at Sobotka for the church gift fiasco, and a feud begins. Avon Barksdale continues to run his empire from a prison cell.

Lt Cedric Daniels lets it be known he is going to leave the department. McNulty pursues the identity of the Jane Doe found floating in the harbor.

McNulty goes on a self-assigned moral mission to identify his floater, but his old partner, Bunk, says they have more pressing matter at hand: finding Omar to testify...

Weak product in the pit has Bodie getting heat. Homicide detectives hand out grand jury summonses to stevedores involved in the homicide case, and Port Police Officer Beadie Russell works the lingering affections of an old boyfriend to find out how cargo disappears from the docks.

Trying to let go of police work and return to his marriage, McNulty gives up on identifying his Jane Doe. The detectives look into Sobotka and his money.

Greggs and Prez tap into the circuit of Russian prostitutes. With two sets of evidence, the detail goes to Pearlman who tells them neither crime merits a wiretap, but a drug connection could give the case legs. Rawls can't persuade Daniels to take the murders, but new evidence does.

McNulty goes on a drunken binge of legendary proportions. Fellow stevedores convince Ziggy to fight Maui. Bunk, seeing McNulty's desperation, talks Daniels into asking for him.

Bodie's disastrous sales efforts result in a tongue lashing from Stringer Bell. Ziggy pulls Johnny Fifty into a new caper that makes the Greeks pay big money.

The detail uses satellite technology to its advantage. Bodie is unhappy that Proposition Joe's people are selling on his turf. Valchek visits the FBI in an attempt to get real results on the docks. Ziggy's deal with Double-G goes bad in a big way. Greggs considers motherhood and Prez makes a major blunder.

The detail makes a desperate move. Nick's deceit is in the open, as Sobotka is overwhelmed by bad news. The Greeks confidently ease out of a brief encounter with the detail and Omar's suspicions are validated. The detail hopes to find Vonda's boss. Nick hopes to repair relations with the Greeks and Sobotka is forced to make a difficult choice.

The detail has a setback. Russell and Bunk revisit Philly, looking for evidence. Brother Mouzone talks with Stringer Bell regarding their agreement, leaving Bell to contend with Avon Barksdale. McNulty and Greggs return to the Westside, where they discover new connections. Herc and Carver feel disrespected by fellow officers. Nick tries to come to terms with the Greeks, and himself.