When wealthy ne'er-do-well Jeffrey Downs becomes raucously drunk at a bachelor party marking his engagement to Lorella Cavendore, he buys the animals in a vaudeville act and takes them home. When he awakens the next morning, Jeffrey is astonished to find the animals, especially a performing horse named White Star, in his room. Jeffrey's family, eager for him to settle down, have ordered him to get married or be disinherited, but Lorella's mother, society matron Mrs. Henrietta Cavendore, is shocked after reading the news accounts of the wild party and determines that Lorella must break the engagement. That same morning, Boris Pizaza, who owns the vaudeville act, arrives at the house with his daughter Nell because Jeffrey had proposed to her the night before. Nell realizes that Jeffrey did not really mean to propose and is willing to give back the money he paid for the animals, but just then Lorella and her mother arrive. Although Jeffrey tries to sequester Nell, her father and the animals in a closet, they fall out and Mrs. Cavendore insists on breaking the engagement. Jeffrey's predicament is further complicated by the arrival or his father Jim and grandfather Jim. After another wild party that afternoon, Grandfather Jim tells Jeffrey that he must decide between his family and keeping the animals. Jeffrey selects the animals and is then disinherited. Sometime later, after Jeffrey has joined the vaudeville act, Nell is lured to a bungalow owned by Karl Kenton, the cad who had arranged Jeffrey's disastrous parties. Pretending to poison herself rather than submit, she escapes, after which Jeffrey, who has fallen in love with her, goes to Karl's and fights with him. Following a series of escapades, and with the aid of his valet, Lewis, and White Star, Jeffrey finally reconciles with his family and marries Nell.