To woo dancer Sheila Winthrop, theatrical impresario and philanderer Martin Cortland buys her a diamond bracelet inscribed with her name. While at the jewelry store, Martin also buys his wife Julia a back scratcher for their fifteenth wedding anniversary. After Sheila refuses the bauble, Martin accidentally switches the boxes and presents Julia with Sheila's bracelet. When Julia threatens divorce, Martin claims that he bought the bracelet as a favor to Robert Curtis, his dance director, who, he says, is in love with Sheila. To lend credibility to his story, Martin asks Robert to meet him and Julia at a nightclub and pretend that he is in love with Sheila. Sheila, who is attracted to Robert, is delighted to accompany him until he presents her with the bracelet in front of the Cortlands. Feeling betrayed and embarrassed, Sheila runs out of the club. The next morning, a photo of Robert and Sheila at the club appears on the society page of the paper with the announcement that they are almost engaged. Robert drives over to Sheila's apartment to demand an explanation and is met by Tom Barton, Sheila's boyfriend, who decides to teach Robert a lesson by pretending to be her brother. After Tom pulls out a gun and demands a shotgun wedding, Robert runs out the door and goes to Martin's office. When Martin informs Robert that he has just been drafted, Robert exclaims that the army offers the perfect solution to his problems. While unpacking his suitcase at bootcamp, Robert finds the bracelet. That night, Robert, feeling guilty over his treatment of Sheila, dreams about Tom chasing him with a pitchfork. When the sergeant tries to slap him awake, Robert slugs the sergeant and is sentenced to two days in the guard house. Soon after, Sheila and her aunt Louise come to visit Tom, a captain at the camp. Drawn by sounds of music coming from the guard house, Sheila goes to the window and sees Robert. Robert apologizes to Sheila for his caddish behavior and tries to impress her by claiming that he is a captain. Upon his release from the guard house, Robert steals a captain's jacket and goes to visit Sheila, who forgives him. There he meets Tom and the captain whose coat he stole and is sentenced to two more weeks in the guard house. Soon after, Martin offers to bring his show to entertain the troops and asks Colonel Shiller to assign Robert to the show. The colonel consents, but assigns two guards to watch Robert. When Robert insists on casting Sheila as the lead dancer, Martin, who has already promised the part to Sonya, his latest conquest, schemes to force Sheila out of the show. Unaware that Martin has changed the inscription on the bracelet from Sheila to Sonya, Robert tells Sheila that he has bought the bracelet from Martin as a gift for her. When Robert learns that Tom has been assigned to Panama and is planning to propose to Sheila that night, he hurries to retrieve the bracelet from Martin's apartment. Meanwhile, Martin, knowing that Sonya is at his apartment, sends Sheila after Robert. At the apartment, Robert finds Sonya dressed only in a robe, and when Sheila knocks at the door, he hides her in the bathroom. Robert's guards then appear at the door, so he and Sheila try to escape down the fire escape. When Sheila discovers Sonya, Robert relates his story which Sheila believes until he presents her with the bracelet that now bears Sonya's name. Announcing that she is going to marry Tom, Sheila storms out of the apartment. To get even with Martin, Robert calls Julia and invites her to the camp. At rehearsal, Robert introduces Martin's wife to Sonya, causing the dancer to withdraw from the show. To convince Sheila to return, Robert instructs his fellow recruits Kewpie Blain and Swivel Tongue to incite the soldiers to demand Sheila's appearance in the show. Faced with a line of picketing soldiers outside her house, Sheila relents and agrees to perform as Robert's partner. Robert then tells Kewpie and Swivel Tongue to install a real justice of the peace in the wedding dance number. After completing the dance, Robert kisses Sheila and announces that they are married. Sheila angrily runs off stage but is stopped by Martin, who finally tells her the truth. Forgiving Robert, Sheila goes to visit him at the guard house just as Colonel Shiller arrives to announce his release. As the newlyweds leave the guard house, Kewpie and Swivel Tongue, who have been digging an escape tunnel for Robert, break through the jailhouse floor.