Mike and Molly encounter many speed bumps before they can finally make the trip down the aisle on their wedding day,.

With only two days to go before the big day, Mike and Molly stage their wedding rehearsal, with disastrous results.

When Mike's dad comes to town early for his son's bachelor party, Peggy decides she should attend Molly's bachelorette bash, and proceeds to turn it into a raucous affair.

Molly's dieting goes into overdrive when her wedding dress doesn't zip during her final fitting.

When Mike and Molly meet with the priest at Peggy's church, Molly's forthright nature winds up costing them their wedding chapel.

When Peggy goes out of town, she leaves her dog, Jim, with Mike and Molly, saying it will be good practice for having kids.

Mike is worried when Molly suggests that they write their own wedding vows, until Carl tells him to write vows like he's describing how much he loves lasagna.

When Molly learns that Mike hasn't had a birthday party since he was 9 years old, she decides to throw him a surprise party. Meanwhile, Samuel dates a girl he met through an online dating service.

When Mike realizes he forgot to make dinner reservations for Valentine's Day with Molly, he gloms onto Carl's elaborate plans with his girlfriend Christina.

Joyce drives Vince crazy with jealousy when she agrees to have dinner with her ex-boyfriend.

When Victoria is arrested for various driving violations, Molly and Joyce ask Mike to help spring her from jail.

Carl is confronted with his fear of commitment when he and Christina attempt to take their relationship to the next level.

When Molly gets disappointing news at work, she is thrown into a funk that threatens to ruin Christmas.

When Molly is swamped with Thanksgiving preparations and wedding planning, she asks Mike to help, with mixed results.

Mike starts cheating on his diet as Thanksgiving Day approaches, but attempts to hide it from Molly.

When Mike encourages his mom, Peggy, to get a job, he never imagines how it will interfere with Molly's life.

Carl tries to get a date with an attractive woman he meets at the diner.

Billy's spooked when Molly's boss invites them to a party on Halloween, a holiday he dreads.

Despite Mike's good intentions, he adds fuel to the fire when Molly and her family get in a fight.

Molly wants to save money for their wedding, but Mike is lured into buying Vince's 1957 Chevy Bel Air.

When Mike moves in with Molly and her family, he has to adjust from life in his bachelor pad to a house full of women.

Mike's mom, Peggy, is in for a big surprise when she celebrates her boyfriend, Dennis's, birthday.

After their engagement, trouble arises when Molly wants to start planning their wedding, while Mike wants to go fishing with the guys.