Assigned to write a book report on The Three Musketeers, Beaver (Jerry Mathers) characteristically puts off starting to read the book until the last minute. In desperation, Beaver tries to take a shortcut by watching a movie version of the classic book, which is conveniently running on TV the night before the report is due. Unfortunately, Beaver has chosen to view the 1939 musical comedy adaptation of The Three Musketeers -- considerably revamped as a vehicle for the zany Ritz Brothers! ~ Hal Erickson, All Movie Guide