To placate his wife Blondie for the offense of possession of firecrackers, Dagwood Bumstead agrees to spend a peaceful Fourth of July at her Aunt Hannah's farm in the country. Complications begin to develop when the Bumsteads board the wrong train and are forced to hitchhike to Aunt Hannah's. They are picked up by Millie and Charlie, a young couple on their way to the justice of the peace to be married. As the lovebirds disappear into the justice's house to be wed, Millie's father, Mr. Tucker, rushes in with a shotgun, stops the ceremony, and drives off in the car with Dagwood, his son Baby Dumpling and dog Daisy. Charlie then accompanies Blondie to her Aunt's farm where, with the Bumstead's encouragement, he decides to elope once more with Millie. Charlie's plans go awry when he twists his ankle on Daisy's bone and consequently, Dagwood is pressed into acting as a surrogate. As the reluctant Dagwood mistakenly climbs into Mr. Tucker's bedroom rather than Millie's, he is met with a shot gun. In the ensuing chase, Baby Dumpling finds a stick of dynamite and, believing it to be a firecracker, lights it. The resulting explosion brings in an oil well on Tucker's property, and the old man is so overjoyed that he finally consents to the marriage. The Bumsteads then end their peaceful holiday in the hospital.