With Megan working everyday, Don has time on his hands. He attends a wake for Roger's mother but has had a bit too much to drink, leading to a memorable afternoon. Roger gets particularly upset when an unexpected guest arrives. His daughter is quick off the mark when it comes to the family's finances. Sally's friend Sandy has run off and Betty sets off to find her. She spends the better part of a day in a flophouse waiting for her to show up. She decides she needs a change in her life. Don's presentation to the Royal Hawaiian group doesn't go over too well. Peggy meanwhile seems to have found the solution to her ad campaign. The Drapers have a few of their neighbors over on New Year's eve....and Don seems to have reverted to his old ways.