Mike is inspired by their honeymoon trip to Paris to change his life and travel the world, while Molly worries how their family and friends fared at home without them.

Joyce conveniently disappears after a back injury renders Vince practically immobile, and that leaves Mike and Molly to take care of him. Meanwhile, the newlyweds are still laboring over personalized thank-you notes for their wedding presents.

Molly gets upset when she reviews her wedding photos because in every picture Mike's mouth is open or his eyes are closed. Meanwhile, Carl gets jealous when Christina's ex-husband comes back into her life.

Mike and Molly decide the time is right for them to start trying for a baby. Meanwhile, Carl gets upset when he learns that Molly is still spending time with Christina after their breakup.

Mike is forced to set up his mom with his boss, despite his many reservations.

With the house feeling too cramped and crowded, Molly plans a family yard sale. Meanwhile, Mike and the guys take Carl on a fishing trip to help him forget his breakup with Christina.

When Mike gets nervous after Molly doesn’t get pregnant following weeks of trying, he turns to Carl and Samuel for advice.

With Molly's encouragement, Mike decides to take a shot at becoming a detective, but the stress of readying for the exam begins to impact their relationship.

Even while portraying Santa, Mike cannot contain his frustrations over Molly's Christmas spending and warns unsuspecting children about the dangers of maxing out credit cards to buy toys. Later, while Molly's family enjoys holiday festivities at home - complete with Christmas carols on Victoria's new karaoke machine - Mike and Molly get roped into spending Christmas Eve at church with Mike's mother and boss.

In an effort to boost their chances of getting pregnant, Molly encourages Mike to join her in giving up caffeine and eating healthier, causing them both to have major withdrawals.

Mike prepares to spoil Molly for her birthday, but his plans go awry after he eats psychedelic gelato made by Victoria’s friend Tom.

Mike puts his construction skills to use turning the basement into a living suite for him and Molly, but he may have gotten in over his head. Meanwhile, Carl asks Samuel if he would be interested in moving in with him.

On Valentine's Day, Mike and Molly play Cupid and prod Harry into asking Victoria out on a date, and to everyone's surprise she accepts. Meanwhile, Carl has a list of reasons why hanging out at the coin laundry on the holiday will help Samuel and him meet single women.

Wannabe-parent Mike takes a crash course in male fertility and heads to a clinic to ensure that he's potent enough to make a mother out of Molly. Meanwhile, Vince starts a job as a door-to-door vacuum-cleaner salesman.

After their verbal brawl at the mall, Mike goes off in a huff, so Molly goes off on a shopping spree.

Carl and Samuel hope for a little luck o' the Irish when it comes to picking up women at their St. Patrick's Day party, while Molly does a little Erin go bragging when she tells Mike about some of her holiday shenanigans.

Molly joins Victoria and her junior-college friends on a spring-fling getaway, while Mike works the Captain for some overtime assignments to earn some extra cash.

Mike’s birthday wish is to have his wife and mother get along, but Molly and Peggy butt heads more than ever as they try to plan his birthday party together. Meanwhile, Samuel and Carl compete for the same woman.

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, so they take up roller skating.

Mike goes on a junk food binge to cope with missing Molly while she is out of town for a teacher’s conference. Meanwhile, Carl contemplates leaving Chicago after learning heartbreaking news from James.

Molly is so focused on directing a school recital that she doesn’t realize a fellow teacher is hitting on her. Meanwhile, Vince convinces Mike to join him in an unusual money-making scheme.

Mike and Carl get stuck working at the Renaissance Faire after their boss, Patrick, gets dumped by Mike’s mother. Later, as a tornado descends on Chicago, Mike and Molly each confess important news to each other.