It's Herman and Lily's centennial wedding anniversary, and each wants to buy the other a nice gift. Lacking the necessary funds, Herman (Fred Gwynne) moonlights as a welder, little realizing that his like-minded spouse Lily (Yvonne DeCarlo) has taken the same kind of job at the same location. While wearing their protective helmets, Mr. and Mrs. Munster meet and fail to recognize each other--leading to a ticklish situation when they begin a mutual flirting session! ~ Hal Erickson, Rovi