No, My Darling Daughter

Wealthy Sir Michael Carr's daughter Tansy meets American Cornelius Allingham at her father's office in London. They quickly form a close friendship and share adventures around the city. Meanwhile, Thomas Barclay, Carr's old army comrade turned executive, has recently resigned from Carr's automobile company.

Carr travels on a business trip to New York. He entrusts Tansy to General Barclay who takes her on a fishing vacation in Scotland, keeping his distance from her developing bond with Cornelius.

While Carr is away, Tansy secretly arranges for Cornelius to join her in Scotland. They tour local sights on his motor scooter and grow closer.

The couple camps together, with Cornelius sleeping outside the tent. They continue to meet without telling anyone. The bond deepens.

Back in London, Carr realises his daughter is missing after a weekend in Scotland. He finds photographs of Cornelius and instigates a nationwide police manhunt. The search becomes high-profile.

General Barclay uses his army skills to locate the pair in the countryside. He sneaks up, knocks Cornelius out, and brings a resisting Tansy back to London. The plan to protect Tansy is carried out aggressively.

Cornelius awakens and learns he is wanted by the police. He hands himself to Carr and reveals that he is the heir to a fortune and holds significant shares in Carr's company. Carr is relieved and reassesses the threat of a fortune hunter.

With the truth out, Carr blesses the engagement between Cornelius and Tansy, relieved that his daughter hasn't been seduced by a fortune hunter. He sees a chance for stability and a strong alliance through the couple.

Thomas realises he is in love with Tansy too. After a kiss, she realises she shares his feelings and they decide to elope. The twist complicates the planned arrangement.

General Barclay is furious at first about the turn of events. Carr gently reminds him that elopement and marriage were the exact hopes they had for the next generation. The two men reconcile around the unconventional plan.

Cornelius's status as heir and shareholder cements the business angle of the arrangement. Carr's company stands to benefit from the alliance with Cornelius. The domestic rift settles into a hopeful future.

With the romantic pairings in motion, Tansy and Thomas solidify their bond, while Carr and Barclay adapt to the new power dynamics. The future looks uncertain but hopeful for the blended family.