Fred feigns illness so he and Barney can get out of taking their wives to the opera, as the night coincides with a Bowling Championship. Using Barney’s home-made prehistoric helicopter as a means of escape, the two then join their bowling team for the tournament. They almost get away with their scheme, until loose-lipped Barney gives away their night’s activities by using a fake mustache he and Fred used earlier to try to fool their wives at the bowling alley.
