In this buoyant early-sound romance, the bold and worldly Diane North hides herself in the trailer of Dr. Lawrence Smith, a dedicated bacteriologist known for his scientific rigor and his patience with troublemakers. Diane is determined to escape her lavish wedding, and she latches onto Larry as a reluctant ride-along as he boots across the country toward San Francisco. Larry’s plan is simple and earnest: reach the ship bound for China, where he’ll collaborate with a renowned expert on a cure for a dangerous disease. But Diane’s appearance interrupts his straightforward itinerary, and from the moment she reveals she’s not the desperate runaway she pretends to be, his carefully laid journey begins to unravel.
As the miles roll by, Diane confesses she’s really Maggie Jonesy Jones, a woman of modest means hoping to reach a less-imposing uncle. Larry, ever the practical do-gooder, tries to shake her off, but the feisty heiress proves charming and stubborn in equal measure, weaving a web of sweet persistence that makes it harder for him to part ways. The bond between them grows even as the reality of Diane’s ruse becomes clearer, and the pair’s banter gives way to a shared, if complicated, affection.
Meanwhile, back home, Diane’s affluent and somewhat naïve mother—Mrs. North—is frantic at the thought of losing her daughter to a destination far beyond the reach of her wealth. She channels her concern into a reward offer for Diane’s safe return, and she is soon joined by a fiancé who remains blithely unconcerned about the drama, Walter Corbett. The contrast between the two generations and their different stakes in Diane’s fate adds a layer of social comedy to the chase.
The lighthearted caper deepens at a bustling lunch counter, where two scheming grifters recognize Diane and decide to ride along for a quick score. Their plans collide with the honesty of Orestes, the diner's cook, who initially buys their ruse but soon sees through the deceit. He tries to salvage the situation by alerting the authorities, and before long, Diane, Larry, and their would-be protectors find themselves escorted to the Omaha police station. The confusion could have spiraled, but Captain G. G. Burke proves capable of straightening the tangled threads, ultimately letting the couple go free and sparking a final, if fragile, reconciliation.
Marriage follows, a bright note that signals a new chapter for the pair. Yet the mood shifts again when Diane quietly orchestrates a wrench in Larry’s plans: she calls her mother to intervene and sabotage his future trip to China. This time, though, Larry learns that the celebrated doctor’s discovery—the cure—has altered the stakes of his journey, and he balks at the idea of leaving Diane behind once more. The revelation strains their bond, and Diane’s true identity becomes a focal headache as Larry’s anger momentarily overrules his prior tenderness.
A turn of fate pulls Larry back through Omaha, where he is unexpectedly arrested under the shadow of suspicion of kidnapping or harming Diane. The local authorities, led by Captain Burke, confront the missing wife and the missing husband, and the truth finally surfaces: Diane’s mother concocted the sensational backstory to steer events to her own liking. Diane’s confession exposes the ruse, and Larry prepares to depart again for San Francisco, with time running short and tensions still high.
The voyage toward reconciliation accelerates once more when Larry boards the ship and is asked to dine with the captain. The shocking twist comes when he discovers that the guest of honor is, in fact, one of the ship line’s owners—Diane herself. Humiliated, he storms out, only to be coaxed back by Diane’s earnest insistence that they try again. The final note of the tale is hopeful: against the odds and with a working knowledge of each other’s flaws, the couple chooses to give their relationship another chance, navigating love, deception, and the lure of distant shores with a shared sense of humor and a renewed commitment to each other.
