Davis gets a "job job;" Colson gets his transfer too little too late. Batiste runs into a couple of old Mardi Gras friends; LaDonna and the boys do Mardi Gras day; Bernette and Sofia salute Creighton and carry out their Mardi Gras tradition; LP Everett experiences his second Mardi Gras in a row. Annie butts heads with Marvin Frey in the studio. Hidalgo cashes out - but pays it forward.

Batiste receives bad news in the band room; Bernette receives a surprise but helpful package; Lambreaux receives a blessing. Davis reaches a mid-life milestone; Delmond plays a song for his Daddy; Annie gives in to her manager. Colson pays a visit to his boys on their home turf; Hidalgo does some digging on McAlary's behalf. L.P. Everett returns to New Orleans and finds he has fans in unexpected places.

Davis and Cheeky Blakk go “full ghetto” on Davis’ goodbye to the musician’s life. Tim Feeny reveals himself and his intentions to Janette when he finds out that she’s throwing an unauthorized benefit for Gigi’s. Delmond parts ways with the powers that be. Toni sees hope that Joey Abreu’s killer may be prosecuted.

Davis is upstaged by an up-and-coming rapper; Albert's attention to detail irks Delmond; Nelson makes the best of a frustrating situation; Toni questions murder witnesses; Colson moves to the homicide division; LaDonna faces a difficult choice; Annie experiences the good and bad of New Orleans; Antoine changes his tune on his teaching gig. Cowritten by George Pelecanos and David Simon.

Lambreaux takes Davina on a tour of his old neighborhood. Violence in the streets finds its way into Batiste's classroom. Desautel learns the hard way what's in a name; Bernette learns all is not as it should be at Orleans Parish Prison when she meets the parents of a deceased inmate. Annie takes in a show at One Eyed Jacks; takes home the lead singer. Delmond turns down a gig to be close to home and family. Tensions at work translate to tensions at home for Colson and Bernette. Hidalgo takes McAlary on a dinner date to talk business; LaDonna has a dinner date of her own with Lambreaux.

Toni's concerns about Creighton turn to anger; Albert and the Indians suit up for St. Joseph's night; Antoine gambles away a big payday; Davis tries to convince Janette to stay put; Annie weighs her future options. A funeral procession offers its mourners a chance to reflect on the events of the last year in New Orleans.

It’s Carnival time: Toni finds Judge Gatling dispensing judicial orders and potables at Galatoire’s. Janette seeks counsel from Emeril Lagasse and deconstructs crawfish etouffée with Al Roker. Sonny falls on the wagon. As Nelson schmoozes, Annie sits in with the Neville Brothers at the Washington, D.C. Mardi Gras Ball.

Jazz Fest takes center stage in New Orleans, giving Treme residents a welcome respite from a challenging year.

Batiste helps a student in a sticky situation. Lambreaux teaches LaDonna the true meaning of "Mighty Kootie Fiyo." Hidalgo meets musician turned activist Davis McAlary. Sonny goes to "see a man about a horse," instead finds trouble. Manager Marvin Frey questions Annie's ambitions; she questions his intentions. Delmond gigs with the great Ellis Marsalis. No longer on the Avenue, Desautel is stumped about what to call her new restaurant. Colson asks to be transferred to a new district. Sofia votes yes to her mother's new living arrangement. Bernette bails out a friend. Obama is elected.

Antoine does a good deed, and a homeowner suspects Nelson’s deeds may not be so good. Davis fails to sign “Sugar Boy” Crawford for his opera, but Delmond gets his father to sign up for assistance from New Orleans Musicians’ Clinic. L.P. learns that his headless skeleton wasn’t always so.

Desautel brings in the New Year with Davis and Jacques; Davis embarks on a mission to bring music back to Rampart St. Batiste gets a taste of Hollywood South; Annie gets the message "loud and clear" from her manager Marvin Frey. Delmond is inspired to work on a new piece. Lambreaux goes for a night out and over does it. LaDonna takes Alcide and Randall to visit her momma in Baton Rouge. Bernette wants to proceed with a case against Orleans Parish Prison; Colson wants to tell all that he knows.

Aunt Mimi and Davis form a record company and sign rapper Katey Red; Janette makes her dramatic departure from Restaurant Brulard; Antoine reluctantly lands a teaching job.

News of Jacques' troubles reaches Janette; Nelson does a favor for Oliver Thomas; Antoine names a deputy. Also: performances by John Hiatt; and Henry Butler.

Despite her reluctance to take on new cases, Toni helps a Massachusetts man who wants to know what happened to his son after Katrina. Meanwhile, Albert plans to cook a Thanksgiving turkey whether or not he has a place to do it; Annie learns the quirks of Davis' music-cataloging system; Antoine considers forming his own band; and Nelson gets acquainted with the local business community.

Lt. Colson worries about the quality of the police department's investigations as citizens and activists prepare for an anti-violence march in January 2007. Meanwhile, Aunt Mimi helps Davis woo a rapper for their CD sampler; Harley encourages Annie to start writing her own songs; Nelson and Ligouri take the next step in New Orleans' redevelopment; Delmond searches for an elusive sound; Albert gets fed up with red tape; and Janette hopes her New York connections can land her a new job.

Antoine holidays with his kids in Baton Rouge while LaDonna and Toni look into a local case of mistaken identity. Davis and Creighton decide to take their pain to the masses, while Sonnie leaves Annie for a gig in Texas and Albert accepts an invitation for dinner.

Janette, Aunt Mimi and Annie commit to new deals, with varying degrees of enthusiasm. Toni may have found the killer she seeks, but Terry is still looking for his; L.P. meets his victim’s family; Antoine plays his bone in Texas; Sonny plays his music closer to home.

In the small New Orleans neighborhood of Treme, they are about to celebrate the first "second-line parade" since the town was struck by Katrina and many of the local musicians and residents are reunited, but even more have not yet returned.

Janette gets a new nickname; Toni relies on Colson for another favor; Sonny finds an unlikely reason to go to the docks; Antoine pays a price for his on-stage antics; Albert and Delmond travel to make their record.

As the city celebrates the return of many displaced residents with another second line parade, Albert presses a Councilman to reopen housing projects and Davis recruits some local musicians to put out a campaign CD.

While Davis trades piano lessons for his freedom, Albert makes an unnerving discovery and Annie gets a gig on her birthday.

Davis' band debuts, but Annie is hesitant to perform her new song. Meanwhile, Delmond runs his fusion sound by Dr. John; Nelson makes a deal with the city; Sofia falls in with the wrong crowd; and Janette mulls moving to a less intense job. Performers include Susan Cowsill and Leroy Jones.