Tommy copes with the loss of his father and a new man in Janet's life. Sheila finds a different way to deal with her issues while Sean, Franco, and Mike concoct a surefire way to get rich and laid.

The calls from Tommy's AA sponsee increase as Tommy attempts to navigate a touchy issue with Colleen.

After a run in with Janet's brash new boyfriend, Tommy grows concerned about Katie's whereabouts. Sheila is finally able to come to terms with Jimmy's death as Damien makes the decision to follow in his father's footsteps.

A late-night cleanup turns into a nightmare for Tommy when several unexpected visitors stop by the bar. Feinberg allows Damien to ride along with the crew, but may not be prepared for the consequences.

Tommy and Mike must lay their differences aside when a roadblock puts a dangerous halt to a routine call. Sheila uses her leverage to control Tommy's drinking, while Lou refuses to give in to the allure of an old flame.

The stakes are high between Lou and Tommy as they vie to be the last single man standing. Garrity looks worse than the guys had expected, but have no idea just how far from reality he has drifted.

A gruesome accident has the guys fighting to stay strong. When Tommy is the only one to remain stoic, he seeks a violent outlet for his emotions.

The crew gathers to show their support for Franco as he steps into the ring. Sean reveals his shady financial scheme and things quickly turn from bad to worse when an act of good will backfires on the crew.

Damian's graduation ushers in a new era at the firehouse - one steeped in brotherhood, tradition, and hazing. It's all fun and games until Tommy's decision to protect Damian leaves the rest of the crew in a dangerous position.

When Tommy has to clean the firehouse due to his defiant ways, a mystery woman suddenly makes an appearance. Meanwhile, when Tommy's drinking begins to cause problems, his family confronts him.

The perfect party becomes a nightmare when a herd of brutish women infiltrate the bar. Tommy's love triangle reaches new heights.

A no-nonsense woman shows up at the firehouse talking trash and looking for a date. Janet offers Tommy an ultimatum, Needles and Lou concoct a battle of the sexes, and Sean's medical condition takes a trip below the belt.

When Kelly-- a headstrong recent save-- continues to probe the firehouse for men, Tommy steps in to put a halt on her advances on Damian. Lou approaches Needles to act as a buffer to Tommy for the upcoming nuptials.

Janet divulges the sordid details of a past relationship to Tommy and he lashes out. With Janet and Sheila on the rocks, Tommy seeks refuge in Kelly.

Uncle Teddy appears surprisingly stoic after a staggering personal loss, but finally bursts at the seams and has the gang cornered. Janet and Sheila's plan goes haywire and leaves a trail of destruction in its wake.