Ted reveals to Lily his plan to sell the house he has been working on in the suburbs and move to Chicago immediately after Robin and Barney’s wedding.
After Lily hears about Robin’s missing locket, she tells Ted that Robin had placed the locket in his pencil box one drunken night while professing her love for him years ago, and he resolves to give the recovered locket to Robin as a wedding gift.
Meanwhile, when Marshall takes baby Marvin to visit his mother in Minnesota before the trip to Rome, he receives a call with a job offer to be a judge in a Brooklyn courthouse and accepts the position without telling Lily.
After an obnoxious couple ruins Barney and Robin’s planned night of relaxation, they resolve to break up the couple with an elaborate ruse but end up provoking a marriage proposal. ...