Baby Dumpling, the six-year-old son of Blondie and Dagwood Bumstead disappears from sight during his first day at school. While Dagwood frantically combs the city in search of the boy, Baby Dumpling spents a nice, safe afternoon with poor little rich girl Melinda Mason, who with her new playmate's help arises from her sickbed to walk across the room for the first time in months.
Penny Singleton
as Blondie Bumstead
Arthur Lake
as Dagwood " Dag " Bumstead
Larry Simms
as Alexander " Baby " Bumstead
Daisy
as Daisy
Danny Mummert
as Alvin Fuddle
Jonathan Hale
as J.C. Dithers
Robert Middlemass
as Abner Cartwright
Olin Howland
as Encyclopedia Salesman
Fay Helm
as Mrs. Fuddle
Peggy Ann Garner
as Melinda Mason
Roy Gordon
as Mr. Mason
Grace Stafford
as Miss White
