While Tommy and Johnny have another encounter, Janet and Angie re-establish their acquaintance. Meanwhile, Sheila is unhappy when she sees Tommy and Angie together. Maggie wants to get back together with Sean. Mike hooks up with a woman at a bar, making his roommate, Chris, jealous. Franco finds out about Jerry's second job at the pub, and the money in the no-smoking jar goes missing.

Lou turns to new-age techniques in his efforts to change his life. Sean and Maggie come to a surprising decision. Tommy and Angie continue to see each other, which quickly leads to an embarrassing scene with Janet.

Janet plots revenge when she learns what Tommy did with the baby; Franco questions his marriage proposal to Natalie in light of Alicia and Keela's return; and Tommy faces his ghosts.

The Gavin clan stages an intervention after several disturbing family calls; the mysterious woman (Gina Gershon) from the restaurant leaves Tommy wanting more; Janet must take matters into her own hands to get her baby back; and a depressed Mike calls Tommy in a moment of despair

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, looking for a date, shows up at the firehouse talking trash; Janet offers Tommy an ultimatum; Needles and Lou concoct a battle of the sexes; Sean's medical condition moves lower on his body.

What starts as a controlled interview takes a turn for the worse, ending in a full-on brawl. The beef continues even after the guys survive a harrowing scenario at a call.

Tommy has his badge revoked when his latest tirade goes national. But Sheila’s two-pronged attack hits Tommy’s critics where they least expect it, vindicating Tommy and clearing the Gavin family name.

A day at ground zero inspires Tommy to write letters to his loved ones. When Lou betrays his trust, Tommy returns to ground zero with an old friend.

Franco demands a sense of responsibility around the house, but a precarious call puts his leadership skills to the test. Lou delivers Tommy's letters unbeknownst to Tommy.