Bumbling hotel pants-presser Joseph Rivington Renolds is obsessed with Broadway performer Constance Shaw and routinely "borrows" his customers' fancy clothes in order to follow her around town. The temperamental Connie, however, is oblivious to Joe, preferring the company of her fiancé, actor Larry West. One night, while Joe is at a nightclub wearing a customer's expensive tuxedo, Connie comes in and sees Larry kissing socialite Suretta Brenton. Enraged with jealousy, Connie sits at Joe's table and pretends to be his date. By chance, the tuxedo's owner, tourist Spelvin, is sitting at the next table and recognizes his suit on Joe. Spelvin pursues him onto the dance floor, but is unable to catch the clumsy Joe, who flees the club. Later, Joe goes to see his sixty-fifth performance of Dixie Lou , a Civil War melodrama starring Connie and Larry. After the show, Kenneth Lawlor, the producer of Dixie Lou , brings Suretta to Connie's dressing room to discuss backing for Connie and Larry's next show. After the smug Suretta shows off a ruby bracelet that the ambitious Larry has bought for her, Connie is furious and storms out of her dressing room. On her way out, she runs into Joe and, seeing the smitten fan, gets an idea. Sometime later, Connie and Joe return to the nightclub, and seeing Larry, Suretta and Kenneth seated together, Connie introduces Joe as her new husband. Connie, who has misheard Joe and thinks that he owns gold mines, informs Kenneth about her husband's wealth, and Kenneth immediately sets up a meeting with him. Connie and Joe then check into the honeymoon suite at the same hotel at which Joe works, and while Joe is out securing some champagne, Connie starts to write a farewell letter to him. Before she finishes, however, Larry calls and again infuriates her with his indifference. Connie is about to sneak off when Joe returns with the champagne. Unable to say goodbye to the lovestruck Joe, Connie decides to drug him instead and slips some of her sleeping pills into his champagne. Joe unwittingly switches the glasses, however, and Connie falls into a deep slumber. The next morning, Kenneth arrives at the suite with Larry and Suretta, who claims to want to invest in Kenneth's new show with Joe. Unknown to Kenneth, Joe and Connie, Suretta is aware of Joe's impersonation and has called for valet service. When Joe's boss, tailor Ed Jackson, shows up and sees Joe in the room, he angrily exposes him as a pants presser, and Connie immediately agrees to a divorce. Feeling that he has nothing more to lose, Joe slugs the cocky Larry, then attempts suicide by asphixiating himself with the valet service gas. As the gas is soon turned off, Joe only falls asleep and is eventually awakened by Ed. The blustery Ed at first criticizes Joe for thinking he could marry a famous performer like Connie, then changes his mind and insists that Joe demand his conjugal rights. Pushed by Ed, Joe sneaks into the theater through the cellar and bumps into actor Roy Hartwood. Unknown to Joe, Roy is a Nazi saboteur and has been digging a hole in the theater wall so that he can plant a bomb and destroy some ordnance that are being stored next door. When Roy is later ordered by his superiors to set off the bomb that night, he asks Joe, who has bragged that he knows every line in the show backward and forward, to go on for him. Joe reluctantly agrees and dons Roy's stage beard and costume. Mistaking Joe for Roy, one of Roy's Nazi cohorts slips him a message about a submarine rendezvous, but Joe fails to grasp its significance. Although Joe's amateurish, bumbling performance enrages Connie, Joe refuses to leave the stage. When he suddenly understands the Nazi's message, however, Joe dashes offstage and becomes engaged in a protracted fight with Roy. After knocking out Roy, Joe races to the cellar and begins a frantic search for the bomb. Connie soon joins him and, impressed by his bravery, professes her love. Moments before it is to explode, Joe defuses the bomb and then learns from the police that he will be rewarded for his efforts. Later, Joe becomes not only Connie's true husband but the co-producer of her next show as well.