Annie was off her HRT therapy and ready to make out with her husband.  Eric was too worried about his kids though to be interested.

Mary was hiding the fact from her family that her new boyfriend was around Eric's age.  She didn't want him to come to the house, but airplane pilot Capt. Jack Smith showed up unexpectedly.  Mary never told her family that Jack was her boyfriend, but Kevin suspected and got the truth out.  Against Annie's advice, Eric chose to call Ben to tell him that Mary was dating a much older man.  Ben got angry and told Eric to tell him to tell Mary that he was going to start going out with his old girlfriend.  Ben's old girlfriend showing up was Mary's excuse to Kevin as to why she broke up with Ben.  Kevin tried to tell her that Ben wasn't interested in his old girlfriend, but Mary didn't believe him.

Lucy was jealous of Kevin's new partner, a beautiful young blonde named Roxanne.  Kevin insisted that their relationship was strictly professional and had invited her over to the house immediately to meet Lucy so Lucy wouldn't get jealous.  Lucy tried to call Det. Michaels to get him to replace Kevin's partner, but Kevin stopped her before she could embarass him.  When Robbie saw Roxanne outside of the house, he remembered her from 7th grade.  He told her that he spent the 7th grade thinking about making out with her.  After Kevin and Lucy talked, Lucy went to talk to Roxanne and saw her making out with Robbie.  The four decided to go on a double date, where Roxanne told Kevin that Lucy use to date Robbie.  She didn't realize that Kevin didn't know and Kevin got upset.  On the date, Kevin was distracted and took Roxanne to confront Mary and her new boyfriend.  Kevin was now living in the garage apartment.

Simon made out with a girl from school throughout the episode to warm up taking her out to make her boyfriend jealous.

Ruthie pretended to have a boyfriend to trick her dad into letting her keep Eisenhower, the chimp from across the street.  She was so distracted that she initially missed that Capt. Smith was Mary's boyfriend.  Eric refused to let Ruthie keep the chimp.  It worked out when Eisenhower's owner showed up with a new girl chimp to keep Eisenhower company.

Robbie became jealous when he heard Kevin call Annie mom.  Annie had asked Kevin to call her Annie until he was actually engaged to Lucy, but Kevin insisted on calling her that saying that he would eventually marry Lucy.  In the upstairs hallway when Robbie and Simon were talking, Annie told them goodnight.  As Robbie walked back to his room, he called out "Love you!"  Annie replied, "Love you too!"  Robbie then smiled as he went to his room.