When Evelyn is able to secure Chelsea's dream wedding location, Charlie gets a little freaked out that he is actually getting married. Alan does not ease Charlie's nerves by jokingly reminding Charlie of all the things he will be giving up once he become a married man. Charlie feels a need to get out of the house where Chelsea is excitedly calling all her friends and family to tell them the news. Meanwhile, Jake grills Chelsea about the wedding plans making sure the bridesmaid he walks down the aisle meets his standards. Charlie and Alan head to a bar where Charlie strikes up a conversation with a pretty woman and order rounds of drinks. Next thing Alan and Charlie know, they are waking up in bed along with the woman from the bar. They are both shocked, and can't recall the events of the night before that landed them in bed together. Unnerved by the possibilities, they attempt to forget the event ever happened but Charlie is plagued by guilt. Charlie considers coming clean to Chelsea until his mother confronts him with her own drunken story from the past that blows Charlie's story out of the water.
