Robin arranges for an open house and Barney explains the features while recounting his sexual escapades.
Marshall is growing frustrated that Lily's new job as the Captain's art consultant is stopping them from spending time with each other and Marvin.
Ted convinces Marshall to break his promise not to watch Woodworthy Manor, a British drama (a parody of Downton Abbey), without Lily.
When Lily arrives late to Robin's open house, she finds that Marshall and Ted are posing as a gay British couple with Marvin as their child to help encourage potential buyers.
[1] Max Nicholson of IGN praised some scenes as enjoyable and funny but complained most of the episode was "outrageous" things from Barney.