In the third-season finale, Joe asks Dani to move in before running this idea by Mel. Elsewhere, Marco and Zander both try to win over Lennox; and Ryder earns an odd credential after enrolling in an online course.
Mel gives Joe shocking news during their wedding, and he must quickly make a decision as a result. Meanwhile, Lennox feels torn between Zander and Marco; and Ryder looks for the perfect opportunity to reveal that he won't be attending college.
Many problems arise during Mel and Joe's wedding weekend, including someone getting injured during Joe's bachelor party; the father of the bride going missing; and the groom seeing the bride in her wedding dress.
Joe's mom visits unexpectedly, which irks Mel, but Joe saves his anger for another unplanned guest: his estranged brother. Elsewhere, Lennox and Ryder aren't on the same page with her plans for his future.
Mel plans a wedding for her pal, who then has a change of heart about getting married. However, Mel considers keeping the arrangements intact and substituting herself and Joe for the bride and groom. Meanwhile, Lennox helps Ryder spice up his resumé.
A hit-and-run accident involves Joe and Mel's hairdresser, leaving Mel torn about whom to support. Elsewhere, Ryder attempts to win back Stella by staging a big romantic gesture in the middle of her chemistry class.
Mel and Joe chaperone a dance at Ryder's school, but they misbehave and get thrown out. Meanwhile, Ryder plans to end his relationship with Stella, but he changes his mind after he helps her take care of an ill Isabel.
Lennox's romance with Emerson is exposed, so Mel follows Joe's advice and forbids the relationship, leading Lennox to move out. Elsewhere, Ryder forgets his passport and gets stuck at the Canadian border.
Mel and Joe befriend a married couple, but Mel puts the friendship at risk when she shares a secret Joe told her about the husband. Elsewhere, Zander's failing grades get him booted from art school, so Ryder agrees to let him hide out in the basement.
Mel wants to attend couples' therapy with Joe, and he reluctantly agrees, but problems arise when the therapist turns out to be Joe's ex-flame. Elsewhere, Lennox is unsure about dating her teaching assistant after Zander reenters the picture.
Joe attends a work event with Mel and shares his strong opinions on various issues, leading to some bad press for Mel. Elsewhere, Ryder asks Stella out on a date; and Lennox and Zander discuss their future.
Joe kicks Mel out of a fitness class she asked him to teach, and then he fights with a famous chef at a special eight-course dinner Mel won. Elsewhere, Lennox and Zander search for a buyer for their Web series.
Mel sneaks over to Joe's new place to spend time with him, and her antics may get him fired. Elsewhere, Ryder does a news interview, which he thinks paints him in a heroic light, but it instead becomes an unflattering video on the Internet.
Mel suggests a slow approach to her and Joe's new romance, and Joe obliges, but soon she has second thoughts about this sluggish pace. Elsewhere, Lennox and Zander work together on a comic-book project.
Joe rushes home to Mel to share his feelings with her, but he's crushed to find Austin there. Meanwhile, Lennox conspires to get Joe and Mel together; and Ryder gets ill from food he prepared by himself.
Conclusion. Mel's feelings for Joe become confused as she continues to masquerade as his ex-wife during a family gathering in New Jersey. Meanwhile, Joe's nephew Marco shows a romantic interest in Lennox; and Ryder is asked to do a favor for the Longos.
Part 1 of 2. To make his dying grandmother happy for her birthday, Joe has Mel masquerade as his ex-wife while visiting family in New Jersey; at the same time, Joe's nephew Marco shows a romantic interest in Lennox; and Ryder is asked to do a favor for the Longos.
Joe dates the mom of one of the students he tutors and earns a colorful reputation because of it. Elsewhere, Mel is displeased with Lennox's plan to skip college and drive across the country in a motor home.
Joe and Ryder mistakenly sell an old video of Mel's at a garage sale, and Mel is desperate to get it back. Elsewhere, Lennox's pen pal looks forward to meeting her now that he's out of prison. Series star Joey Lawrence directed the episode.