Not only must Blondie put on a brave face when her husband Dagwood is fired for the umpteenth time by Mr. Dithers, but she must also tolerate the attention paid to Dagwood by pretty WAC Mary Jane McDermott. A whiz in business matters, Mary Jane sets up Dag in his own business, which replenishes the Bumstead coffers but which drives Blondie into a jealous frenzy.

Dagwood Bumstead poses as his boss Mr. Dithers so that a big business deal can be consummated while Dithers avoids nearsighted process server Jim Gray. The upshot of all this is that Dagwood ends up in a lunatic asylum, forcing Blondie to come to the rescue.

Dagwood accidentally discovers a non-flammable paint. Bad guys Dillon and Stack steal it before he can give it to his boss Radcliffe. To show off his invention, Dagwood paints Radcliffe's house with it and is disgraced when the house burns down!