Television personality Regis Philbin meets a burger-mad Marshall while on his quest to find the restaurant where he had his very first New York burger.
When Lily and Marshall have a baby shower, Marshall starts to panic after realizing the baby is coming soon. eanwhile, Ted and Robin come to terms with their relationship and Barney takes Marshall on a road trip.
Carl, Mike and Samuel take a road trip to Memphis to meet Carl's mother for the first time.
Mike is forced to arrest Joyce for a DUI after she refuses to take a breathalyzer test at a checkpoint.
Mike meets his Aunt Rosemary (Margo Martindale) for the first time and is instantly smitten by her warmth and positive attitude – which is the polar opposite of his mother.