As they begin to realize that Mrs. Ng's death is going to make their father very wealthy, the Gavin family begins looking forward to a not-too-distant future where they will all be well off. As Janet solicits his reluctant participation in a ceremony to renew their wedding vows, Tommy decides to share his newfound fortune with his friends at work. However, as they are discussing how to redecorate their Park Avenue apartment, the Gavins are all surprised by the appearance of the family's estranged black sheep daughter, Maggie. And though their father is none too happy to see her, Maggie claims that she had no idea about the inheritance and warns Tommy against assuming that the money is a sure thing as she seeks his support in becoming one of the family again. While a series of untimely miscues gives his fellow firefighters reason to suspect that Mike is gay, Sean works to help the love-struck Franco get over his failed romance as Laura struggles to put her feelings for him behind her. So, with his friends starting to outfit the station with new gym equipment and Janet pressing ahead with her plans for a lavish party to renew their vows, Tommy begins to question the sense of happiness he's been feeling. Meanwhile, as a practical joke plays on the suspicions that Mike is gay, Jerry is called home to attend to his ailing wife and is stunned to find that she's tried to commit suicide. With Sheila finding herself on the receiving end of another vicious beating at the hands of her girlfriend, Debbie, Tommy convinces his dad to accept Maggie back into the Gavin fold. However, after a reading of the will reveals that Mrs. Ng left virtually all of her money to her beloved cats, the elder Gavin's suspicions are confirmed when Maggie suddenly bolts. Finally, as a beating from her pimp has Lou more committed than ever to save Candy from having to work as a prostitute, Tommy and Janet's world is turned upside down when their son, Connor, is killed by a hit-and-run driver.