Robin discovers Ted has kept all of his memorabilia from ex-girlfriends and wants him to throw everything away. Ted disagrees and thinks they are memories that have led him to where he is today; happily in love with Robin. Soon after Ted discovers some of Robin's dogs are gifts from ex-boyfriends, the tables are turned and Robin must decide what to do. Also, Barney plots revenge against Lily after she imposes a play she is in on them.