The story begins as Otis B. Driftwood, a fast-talking business manager, is entangled in the social circles of the wealthy Mrs. Claypool, promising to help her gain entry into high society by securing support for the opera. Meanwhile, the ambitious and talented tenor Ricardo longs to perform at the New York Opera but faces obstacles due to his lack of fame compared to established stars like Rodolfo Lassparri. Ricardo's romance with the beautiful soprano Rosa is also put at risk as she is pressured to align herself with Lassparri for her career's sake, even though her heart belongs to Ricardo. To add another layer of chaos, the bumbling yet resourceful Fiorello and the mute yet clever Tomasso, two devoted friends of Ricardo, join forces with Otis in an elaborate scheme. They concoct a plan to replace Lassparri with Ricardo as the lead tenor in New York.

As Otis and his crew embark on a transatlantic journey from Italy to New York aboard an ocean liner, hijinks ensue when they stow away in disguise, causing a series of comedic mishaps. Onboard, they must evade discovery by authorities and navigate a tangle of misunderstandings and slapstick situations. Upon arrival in New York, further exploits unfold as they try to infiltrate the world of opera—a quest filled with madcap antics and ingenious improvisation. Their goal is to outsmart Lassparri's entourage and ensure Ricardo’s opportunity to perform on stage. The film masterfully blends wit, musical interludes, and rapid-fire exchanges, creating a delightful patchwork of comedy set against a backdrop of high culture.