Mike's dad, Jack, pays him a surprise visit before the wedding. In order to keep him from running into Peggy, Mike brings Jack along on his bachelor party. Peggy, eager to run into her ex to show him she's moved on with her life, crashes Molly's bachelorette party - and she's brought a surprise. A male stripper shows up to entertain the girls despite Molly's hopes to have a "girl's night".
Before hitting the strip clubs, Mike and his buddies cruise around town in a limo. They each offer Mike a heartfelt toast, and Jack realizes what a good man his son has grown up to be.
Later that night, Mike and Jack arrive back at Molly's just in time to see Peggy leave the house with the male stripper.