Having popped the question and been accepted, Barney is now busily helping Robin plan their wedding. But as yet, nobody has asked her dad what he thinks - or indeed if he will give Barney Robin's hand in marriage. How charmingly old fashioned. And how suddenly vital. In the meantime, Ted has his own feelings about the impending nuptials, which are not necessarily generous. Finally, Marshall and Lily can't seem to stop Marvin's never-ending river of tears.