Berg and Ashley go on dates to make each other jealous. Sharon and Johnny find monitors connected to cameras, which are in each of the apartments. They quickly become full-time voyeurs and interfere in the lives of everybody.
Pete and Ashley are mugged in a railway station on the way to a golf tournament. Berg has lost confidence in his ability. Sharon and Johnny have trouble writing their wedding vows.
Berg and Irene decide to tell Pete that they are an item. Pete and Susan are still together. Johnny buys an expensive thank-you present for Ashley but Sharon thinks it is for her. The gang have a party and all the secrets are revealed.
There are plenty of problems with the apartment block. Ashley's apartment toilet has sprung leaks, which are leaving the boys' bedrooms wet. This causes chaos as they look for some where to sleep.
Pete are Marti start dating. Sharon and Johnny had another fight and the bookings were cancelled. Irene promises to organise the wedding for the next day and, despite some last minute doubts, Sharon and Johnny are finally married.
At Halloween, Johnny finds a creepy room in the basement that is inhabited by a mad scientist. The scientist swaps Pete and Ashley's brains, and then Berg and Sharon's. It is up to Johnny to save the day.
Ashley plans a new year's eve karaoke party. Pete invites Irene and she looks stunning and acts normal. Berg treats Robert Goulet for an earache and invites him to the party. Sharon organises her own romantic evening with Johnny.
Berg is still on probation and is moved to the morgue. Johnny ruins a wall in Irene's place and she is forced to spend the night with Johnny and Sharon. There is a new trainee fireman determined to outdo Pete.
Berg remains on probation and finds out his mother and father have split. Ashley does some work to help him. Pete and Marti finally express their feelings for each other. Sharon and Johnny are having second thoughts about the wedding.
Berg and Irene end up together but don't want anybody to know. Pete and Marti make a date, although it doesn't go well. Sharon and Johnny's honeymoon is curtailed due to differences in the value of money.