Barney's brother is in town, but he doesn't want to tell Barney that he's getting married because he'll be losing his only single sidekick.
Brian and Stewie travel through alternate universes.
Larry resists Jeff's suggestion to do a "Seinfeld" reunion special.
Larry is frustrated by a 9-year-old's text messages; Leon poses as a dead man; Jerry befriends Marty Funkhauser.
Doug and Arthur play detective when Doug suspects an admirer of Carrie has stolen his wallet.