In the Marx Brothers' first feature film, Groucho portrays a hotel owner who tries to fleece everyone, from innocent bellboys and bellgirls to wealthy society matron Mrs. Potter (Margarent Dumont). Chico and Harpo play resort hotel con men, whom Groucho recognizes instantly when their suitcase pops open - empty. "We'll fill it up before we leave," Chico assures him.
When Mrs. Potter discovers that her jewels are missing, Chico and Harpo rescue falsely accused hotel clerk Bob Adams (Oscar Shaw), find the jewels, trap the real perpetrators and unite Bob with his sweetheart Polly Potter (Mary Eaton).
Complete with music and lyrics by Irving Berlin and one of the first overhead shots of dancing bathing beauties, the nonstop screwball comedy includes some of the Marx Brothers' best stage routines, including Groucho's land auction, the excruciatingly funny "Viaduct" dialogue and Polly Potter's engagement party.