Mike goes on a junk food binge to cope with missing Molly, while she's out of town for a teacher's conference. Meanwhile, Carl contemplates leaving Chicago after learning heartbreaking news from James (guest star LAMONICA GARRETT).

After learning that Joyce gave up her artistic talents when she became a mother, Molly decides that she and Mike need to pursue new hobbies before becoming parents. Consequently, Molly encourages Mike to take up roller-skating with her!

Even though Mike's birthday wish is to have his wife and mother get along, Molly and Peggy can't seem to play nice as they try to plan his birthday party together. Meanwhile, Carl and Samuel compete for the same woman.

Molly joins her sister on a Spring Break road trip to party with Victoria's friends from junior college, while Mike pulls some strings with his boss for some overtime assignments.

Carl and Samuel host a St. Patrick's Day party in hopes of attracting some lucky ladies. Meanwhile, Molly reveals juicy secrets from her previous St. Patrick's Day excursions to Mike.

Molly enjoys some retail therapy and goes off on a shopping spree after Mike storms off over a disagreement and disappears at the mall.

Mike studies male fertility and visits a clinic to ensure that his "swimmers" are up to the task of starting a family with Molly. Meanwhile, Vince gets a new job selling vacuum cleaners door-to-door.

Mike and Molly encourage Harry to take Victoria on a date for Valentine's Day, and everyone is shocked when she accepts. Meanwhile, Carl convinces Samuel that they will be able to meet women at the laundromat during the holiday.

Mike begins transforming the basement into a living area for he and Molly to live in, but the construction work is more than he - or his eyebrows - can handle! Meanwhile, Carl invites Samuel to move in with him.

Mike prepares to spoil Molly for her birthday, but his plans go awry after he eats psychadelic gelato made by Victoria's friend Tom and goes on an unexpected trip.