When a nobleman loses his way in the fog and enters a house where there's a party going on, he's mistaken for a hired butler.

Two sailors (William Haines and Cliff Edwards) are leaving the US Navy after 10 years. In their spare time, one of them (Haines) invents a carburetor that should increase the speed that powered boats will run, but all they succeed in doing is sinking the Admiral's barge. After discharge, broke and out of work, they find work with a boat builder who wants the fastest race boat in the world. They design the boat, carburetor and the engine but lack of money and the foreclosure of the business hinders their efforts to prove the new design.

Ambitious social climber Mr. Wygate hires charming rogue Eddie Able to polish his shy daughter Geraldine into a dazzling debutante. Geraldine, smitten with the aloof lawyer Bell Cameron, initially embraces Eddie's lessons. However, Eddie falls for her genuine spirit and clashes with Mr. Wygate's aspirations.

Peggy and Bill are high society lovebirds, but their marriage plans are put on hold while Peggy spends most of her summer straightening out her wayward parents and her unlucky-in-love sister Janet. Mama and Papa are set to rights fairly quickly, but Janet's the one with real problems. It seems she sent some compromising love letters to a worthless cad, and now the bounder wants to use the letters for blackmail. Peggy's friend Roger and his flapper sweetheart Tootie hatch an elaborate plan to retrieve the incriminating letters and salvage Janet's reputation.

A society novelist brings a brash young chorus girl home in order to study her for inspiration for his new novel. His family is distraught, but soon her behavior has forever altered their snobbish ways.