A wild party puts two married salesmen in trouble with their wives and the law.

When young salesman Barry Greene receives word that he has been assigned to the prestigious J. C. Wilson account in Detroit, he wires Wilson from his train and cockily informs him that he is about to be offered the "opportunity of a lifetime." While waiting to see Wilson, Barry meets Wilson's daughter Ellen and, unaware of her identity, forcefully delivers his sales pitch to her. Amused by Barry's sincerity, Ellen promises to "put in a good word" for him with her father. However, when confronted with her father's usual paternal neglect, she threatens to "turn wild" and leaves his office without saying a word about Barry. Tossed out of Wilson's waiting room, Barry accepts a ride from the dejected Ellen and makes a date with her for that night. When he learns that his expense account is being withheld until he secures Wilson's business, however, he writes Ellen a note from his hotel room excusing himself. Alone in the hotel restaurant, Ellen is approached by one of Barry's colleagues, Ben Hall, a notorious womanizer. Meanwhile, Barry's fellow salesmen--Hymie, Joe and Pinky--party in a suite with several prostitutes, including the hard-bitten Ruby Smith, who once was involved with Ben. After making the nightclub circuit, Ben returns to his hotel room with Ellen and tries to force himself on her. Barry, hearing Ellen's cries, rushes to Ben's room and struggles with him in the dark. During the fight, Ben is shot and seriously wounded, and Barry, the obvious suspect, is ordered by hotel detective Dan Murphy to stay in the rooms with the other partygoers. While the group waits to hear the outcome of Ben's surgery, Ben's wife Martha arrives. Faced with Martha's wifely selflessness, Ruby confesses her hopeless love for Ben and admits that she shot him out of jealousy. Martha forgives Ruby and, informed that Ben will live, goes to his side. Cleared, Barry leaves with Ellen and Wilson, who now realizes his love for his daughter.