Penelope Sherrold marries Don Garth while thinking she is still in love with wastrel Dick Wentworth, in order to provide for her sick mother. Don, head of the Garth Airplane works (fabulously wealthy and important to the nation’s defense) vows to keep away from Penny (that is – separate rooms!) until he can win her love. Though Penny realizes quite quickly that Dick is a cad and that she is madly in love with Don, it takes many misunderstandings, jealousies, and international intrigue before the two can declare their love for each other and get their marriage underway.
