Tommy is unable to recall the events of the beach-house fire for which he is under investigation for. Meanwhile on the home front, he disapproves of his daughter's rebellious behavior. Richard wants Franco to marry Natalie so he can have more freedom. Lou and his new girlfriend decide to make love in the "holiest" of places. Newlywed Garrity is uncomfortable with Maggie's collection of porn movies.

Tommy meets with Sheila in hopes of finding out what really happened on the night of the fire. Lou has his sights set on a new recruit who can really help the squad's basketball team. Teddy is released from prison. Tommy's daughter Colleen is believed to have run away from home.

The crew helps Tommy devise a plan to win back Colleen's affection. Mike convinces Tommy to spend time together outside the firehouse. Jerry faces bad news about his future while planning his role in his gay son's commitment ceremony.

The firehouse learns of the Chief's suicide. Tommy agrees to buy things for his daughter Colleen in exchange for her keeping in contact. He and Janet decide to see a marriage counselor. Franco plans on proposing to Natalie. Garrity considers divorcing Maggie.

After the death of Chief Reilly, the crew of 62 Truck gets a new chief. Tommy suffers embarrassment during a hockey game against the NYPD. Franco works up the nerve to propose to Natalie, while Sean tries to talk Maggie out of a divorce. As Janet's depression deepens, Sheila makes a surprising proposition.

Tommy and Janet cope with revelations about the baby. Garrity finds out a secret about Mike. New probie Black Shawn holds the guys to their agreement. Cousin Mike pays a visit to Lou.

A devastating fire has a profound effect on the members of 62 Truck. Tommy wrestles with his feelings about the baby. Alicia returns with a propositions for Franco. Lou makes a tough decision about Theresa.

Janet plans for revenge when she learns Tommy gave her baby to Sheila. Franco questions his marriage proposal to Natalie in light of Alicia and Keela's return. Tommy faces his ghosts.

The Gavin family stages a duo intervention after several disturbing family calls. The mysterious girl from the restaurant leaves Tommy wanting for much more. In order to get her baby back, Janet must take matters into her own hands. A depressed Mike calls Tommy in a moment of despair.

The Gavin family AA group's first meeting doesn't go exactly as planned. Tommy bribes Colleen for information on Janet. Franco learns the truth about Natalie from Richie while Lou contemplates revenge on Cousin Mike.

Tommy goes on another memorable date with Beth for the sake of the crew. Black Shawn proves himself in an unexpected arena. Franco realizes what he's really lost while Latrina shows she knows how to keep Lou happy. Dad gives Tommy some insight into his childhood.

Tommy plays hero in someone else's uniform which causes confusion in the firehouse. Colleen suffers heartbreak and takes it out on Tommy. Natalie asks Franco for a favor. A rift between Mike and Black Shawn nearly leads to blows. Tempers flare between Tommy and the Chief Feinstein after Tommy makes a move on his daughter.

The spotting of Jimmy's "ghost" is the talk of the firehouse. Colleen blames Tommy for her failed relationship, while Tommy figures out a way to fix his own. Franco and Natalie come to an understanding, while Lou, Mike and Latrina come to an understanding of their own. Tommy and his father take in a ballgame.