Sheldon plays nursemaid to a sick Amy, while Howard attempts to bond with his father-in-law (guest star CASEY SANDER) on an upcoming fishing trip.
Evelyn finally meets Charlie and Chelsea.
Charlie undergoes a colonoscopy to avoid a trip to see Chelsea's bigoted parents, but he finds them in his living room when he returns home.
When Marshall and Lily's wedding is not as they had envisioned it, Barney tries to salvage the special day.
Barney ruins Marshall's bachelor party plans, prompting Marshall to rethink his selection of a best man.