Dr. Molnac and his musical troupe; Beggs, the manager; Mitzi Martos, a singer; Mitzi`s agent Pauline; society scion Barry Saunders and his "keeper" Oliver Goodwin, are en route to Santa Barbara. Barry falls for Mitzi while trying to loosen her slipper caught between two railroad cars, but she mysteriously leaves before he can learn her name. Barry and Oliver take a suite at the Casa Barbara, where they hire the house detective, Parkyakarkus to find the slipper`s owner but he bungles the job. Oliver reminds Barry that he will lose his mother`s $3,000,000 inheritance if he weds before the age of thirty. Mitzi and Pauline also register at the hotel, hoping to induce Dr. Molnac, performing there, to give Mitzi an audition. Also arriving are Mitzi`s mother, Countess Martos and her wealthy friend Mrs. Penner and her son Joe, and the mothers have intentions of Joe marrying Mitzi. Barry finally meets Mitzi, and proposes marriage at a date three years in the future.