Shelly has moved back from Colorado. Denby is forced to moved his office out into the work area while it's being worked on. After finding journal pages in the office printer, Norm is lead to believe Shelly is in love with him, even though she denies it. Danny wants to propose to Taylor.
In order to get Shelly to like him, still, Norm tries to attend a party dressed as a fireman, but he's already agreed to take some kids from a dangerous neighborhood go Trick-or-Treating, since they can't any longer, and has to decide which to do.
Laurie becomes paranoid her relationship with the much younger man, Dale, will come crashing to an end. Danny learns he's related to one of the most famous mass-murdering tyrannical despots in history. Norm gets a new older girlfriend, but little does he know there's a surprise ahead.
When Laurie mentions her, Danny, Shelly, and Denby are each taking in a foster kid for a week while they transition into a new home, Norm becomes surprised nobody thinks he would do it, and ends up having to after Mary, the alcoholic, is arrested. But things are shaken up when the "kid" Norm takes in turns out to be Billy.
Artie uses an electric device that shocks the muscles, to help him lose weight, but there are unintended consequences. Norm selfishly uses group therapy to get Shelly to like him again, but while there learns there might be more between him and Denby than they thought. Norm's dad suddenly shows up after being missing from his life for years.
After Norm's dad shows up after being out of his life for a long time, Norm and Artie regress and seek his approval. Danny has feelings for Shelly. After Shelly and Denby go to a symphony, Denby convinces himself Shelly is red hot for him.
Danny makes his move on Shelly, but is wary of her ex, Norm. After Denby's last shred of dignity is destroyed, he quits. Shortly afterward, Laurie becomes the new boss but she is unhappy in the new position, wanting Denby back.
Now with Danny and Shelly dating, and Taylor and Norm dating, things become awkward. Denby lobbies for better conditions in the men's restroom. The relationships become strained when Danny finds out Taylor still has feelings for him.
Norm asks for and gets a raise approved by Denby, but once Denby announces his dog Fifi is pregnant, Norm worries his raise is in jeopardy when he realizes Wiener Dog may be the father. Once the dogs are born half poodle and half Dachshund, Denby dumps them with Norm, but later Denby shows up suspiciously wanting the little doggies back. Danny tries to mend his broken relationship with Shelly.
Norm's friendship with Laurie becomes trained now that he is homeless and living with her. A girl from Norm's high school that he had a crush on, shows up at the office and has similar feelings for him. Norm accidentally gets Denby kicked out of his apartment. Danny and Denby try to get women on a business trip.
In six weeks, due to the stress of being homeless and living with Lurie, and Denby, after making Denby homeless, Norm gains a good deal of weight. Lurie awakes nights to find she has been sleep walking and ending up lying next to Denby. A thinner, now more well-off Artie, helps out his brother.
In order to avoid insurance fraud Denby has caught him on, Norm has to pretend to be in love with Lurie. Lurie uses this to get a guy she's been trying to hit on, to become interested. Shelly becomes annoyed when she learns that Norm and Lurie are an item, which leads to a revelation.
Norm and Lurie are forced to watch after Hector, a Cuban orphan boy whom sneaked into the country, while the governments decide what to do with him. Lurie turns out to be a lousy mother, though she's completely unaware of it.