Jerry sneaks off to the French Students' Masque Ball, and while on his way goes into a saloon where two criminal-looking individuals sell him a suit of armor.
The next morning he returns home in a cab, and while trying to walk up the front steps, falls down in a deep sleep.
Mrs. Jerry Brown and mother-in-law go to the museum the next day to see the armor and are scared out of their wits when they see smoke curling up from the iron hand-piece.
Taking a uniform from the bellboy he goes home and is met there by his mother-in-law who was about to leave, but who now decides to stay on indefinitely.
That evening Jerry and his pretty young wife celebrate the unwelcome visitor's departure with a large feast.