When Rob and Ellen ask Will and Grace to be the best man and maid of honor at their wedding, Grace's sexy past with the groom is exposed when Ellen learns at her bachelorette party that Grace once slept with Rob. Meanwhile, Jack is confused by his reaction to the entertainment at Rob's bachelor party.
Elenco: Eric McCormack , Debra Messing , Sean Hayes , Megan Mullally , Shelley Morrison .