Malena and Sheri are upset because Mel's visiting friends Brian and Samantha Hunt are wild: Brian encourages Mel and Dean to stay out late partying, and Samantha mocks the women's staid lifestyle. Malena and Sheri try to be like Samantha and let their husbands do whatever they want, but the wives fail to make their men jealous by acting outrageously themselves. Finally, Malena tells Mel about her concerns. Unfortunately, Brian and Samantha buy a house across the street and plan to stay. Meanwhile, Reggie finds out that Bobbi secretly didn't give up her apartment when she moved in with him. He wants a total commitment, but she worries that she will be stranded like she was when her marriage ended. Reggie painfully agrees to get rid of his address book of women he has dated if Bobbi terminates her lease.

Sheri is invited to a night of salsa dancing with her friends, but she doesn't know that their husbands have asked Dean to join them. Meanwhile, Reggie throws out his back during his honeymoon trip to Hawaii.

The fourth season concludes as Dean takes Malena and Mel to the hospital when the mother-to-be goes into labor. Once there, Malena tells her husband to keep his video camera rolling, no matter what happens. Meanwhile, Sheri arrives at the hospital and aggravates Dean.