"Don't matter how many times you get burnt, you just keep doin' the same." -- Bodie

A wave of urban reform brings down the notorious Franklin Terrace public housing towers, forcing the Barksdale drug crew to find a new home. Stringer Bell uses a new sales strategy as he awaits Avon's return. McNulty and the Detail look to make a case against Stringer with a wiretap on a drug ring run by Proposition Joe.

"There's never been a paper bag." -- Colvin

Omar continues his bold strikes on Barksdale stash houses, now heavily guarded. Under orders from Stringer Bell, Bodie faces a critical test against Marlo, a fierce young dealer with lucrative corners. As the wire on Proposition Joe continues to yield little, McNulty launches his own reinvestigation of last year's prison suicide of D'Angelo Barksdale.

"No one wins. One side just loses more slowly." - Prez

Freamon and Greggs move to Homicide, while Herc and Dozerman join Marimow in the lackluster Major Crimes Unit. Cutty gets a "custodial" job at Tilghman School picking up truants, but struggles to make progress while trying to mentor Michael. Bubbles works to get Sherrod back in school as an 8th grader. Burrell finds a way to sabotage the state-witness murder investigation before the election, impacting Greggs. Prez's struggles as a teacher continue while Bodie finds himself working for a new "company". Meanwhile, Colvin pitches his pilot program to the middle school and Carcetti meets with a constituency when he knows that they won't support him regardless of what he says. Randy is faced with a dilemma after being busted for his candy scam and Proposition Joe plays Marlo in a high-stakes heist.

"If you with us, you with us." - Chris Partlow

Commissioner Burrell loses Royce's support; Chris Partlow tries to recruit Michael to become a soldier in Marlo's unit; Dukie shows Randy and the boys that the missing are really dead; Odell Watkins drops his support for Royce and considers an offer from Councilman Carcetti.

"We got our thing, but it's just part of the big thing." - Zenobia

Prez wants to teach off curriculum. Carcetti visits the Homicide Department and goes on ride-a-longs for drug busts. Colvin and Dr. Parneti's class discuss the Corner Boy rules. Bunk convinces Holley to take another look at the Old Face Andre/Omar Little case. Herc and Dozerman begin shaking down Marlo and his crew as they try to have their surveillance camera returned. Chris Partlow and Snoop look to send the New York crew a message. Marlo asks Proposition Joe to look into Herc. Michael's father comes home, while Namond recruits a lieutenant.

"Might as well dump 'em, get another." - Proposition Joe

Herc and Dozerman search for Little Kevin; Omar gets out of jail; Carcetti has his first meeting with the City Council; Prez and the teachers begin teaching the test; Proposition Joe lets Marlo know Major Crimes is after him; Bubbles looks to Kima and Herc to help him out; Bubbles delivers Little Kevin to Herc; Old Face Andre goes into hiding but Proposition Joe sells him out; Bug's father gets in Michael's face; Michael takes his problems to Marlo; Daniels and Valchek gets promoted; Omar and Renaldo monitor Marlo's activities.

"World goin' one way, people another." -Poot

Walker catches Donut boosting cars and teaches him a lesson; Commissioner Burrell gets advice from Senator Davis; Little Kevin has a talk with Marlo and regrets it; Herc ignores Bubbles call and regrets it; the Area Superintendent questions the success of Colvin and Parenti's project class; Senator Davis attempts to con Carcetti; Carver arrests Namond but keeps him out of baby booking; Burrell has the police force juke the numbers with street sweeps; Marlo puts the word out that Randy is a snitch; Elena sees McNulty as a grown up; Chris Partlow and Snoop target Bug's father for Michael.

"That all there is to it?" - Bubbles

While searching for the missing bodies, Freamon goes around the chain of command after being rebuked by Landsman. Carcetti finds that his promises of raises could be undermined by the school debt, forcing him to consider groveling before the Governor for money to pay it off. Colvin tries to keep his experimental class funded. Bubbles considers taking extreme measures to get rid of the man who continues to steal from him. Prez is concerned about Dukie's academic promotion. Omar orchestrates another big sting while Namond and Cutty get a first-hand taste of the "new" Michael. Carver's promise to look out for Randy ends up looking empty.

"If animal trapped call 410-844-6286" - Baltimore, traditional

Burrell tries to help Daniels. Bubbles' big plan backfires and leaves him in big trouble. Colvin tries to find a solution for Namond while Omar makes new plans. McNulty tries to pay back his debt.

"The bigger the lie, the more they believe." - Bunk Moreland.

McNulty and the detail continue to stake out Marlo and his crew. Recently promoted Sergeant Carver is met with complaints concerning unpaid overtime. Meanwhile, Haynes deals with cutbacks, but is still able to expose a politician's connection to a drug dealer; and Joe, Marlo, Fatface Rick meet to divide up the drug trade across Baltimore.

"A lie ain't a side of a story. It's just a lie." - Terry Hanning

A shift in the police department sends Carver to a new location. Meanwhile, Carcetti is forced to put his political future in jeopardy, Haynes digs deeper into Templeton's work, and an important case has a breakthrough by Sydnor, while Fletcher continues working with Bubbles.