A brash nightclub entertainer has to straighten out when he's drafted and falls for a beautiful WAC.

Irrepressible entertainer Mike Donnelly headlines a successful act at Ciro's nightclub in Hollywood and is always eager to expand his routine. Late one evening after his show, Mike and his manager, Joey Kirby, and their showgirl dates are dining at a restaurant when newspaper columnist Barney Fisher makes a bet with the waiter that Mike will be unable to resist staging an impromptu performance. Eager to display a new gag to Joey, Mike indeed practices on patron Sgt. Crockett, who is not amused. The following day, Mike angrily reads Fisher's unflattering commentary about his late night shenanigans, while Joey opens the mail and discovers with horror Mike's draft notice. The Army board refuses to reconsider Mike's call-up because of his profession and within days Mike is at his new Army camp home with a fresh group of trainees. Left in temporary charge of the men, Mike immediately goes into one of his sketches, until he spots attractive nurse Lt. Colleen Rafferty, looking out the window of a nearby barracks. Mike immediately plays to Colleen until he is interrupted by his drill sergeant, Crockett, who is pleased to see him again. Later, during the routine medical examinations, Mike faints when given a shot and after awakening in the infirmary, flirts with Colleen to no avail. Over the next six weeks, Mike stumbles through training, refusing to take any of the exercises seriously and continually turning everything into a gag. One day, frustrated by the exhausting drills, Mike destroys a practice dummy in a rage and is sent to commanding officer Capt. Fred Karger. Karger gives Mike a pep talk and encourages him to accept Army life. Later, the men are given a forty-eight hour pass and Mike hurries to the infirmary to ask Colleen out, but she tells him she has promised to spend the weekend with her mother in Glendale. Colleen is driven home by Maj. Paul Whiteside, where her mother delightedly informs her that an old friend is waiting to see her. Colleen is taken aback to find Mike in her mother's kitchen. Mike talks Mrs. Rafferty into letting him stay in the guest room, where he uneasily watches Colleen bid farewell to Paul. That evening Mike talks Colleen into sitting on the porch with him and laments about not being taken seriously outside the stage. Colleen promises to spend the next day with Mike and the following evening, Mike takes her to Ciro's with Joey. When recognized by the club emcee, Mike renders one of his famous songs. Returning to his table, Mike is embarrassed when one of his former showgirl dates stops to talk, but excitedly accepts her invitation to a party, despite Colleen's clear lack of enthusiasm. When Fisher stops at Mike's table and criticizes him for still being a foolish, hammy performer, Mike grows angry and knocks the columnist down. In the confusion, Colleen departs. Back at the camp days later, Colleen refuses to accept Mike's apology, telling him he is too self-centered and can never forget he is an actor. In frustration, Mike tells off Crockett, who is forced to cancel Mike's next twenty-four hour pass. Desperate to see Colleen, who is returning to Glendale on her pass, Mike buys his buddy Tony's pass for $100 and slips off base. Meanwhile Crockett has taken his concerns about Mike to Karger, who requests to see Mike. Upon discovering Mike's absence, Crockett takes an MP to Colleen's home, where Mike has gone in search of Colleen, who has gone to the park with Paul. After Mike becomes embroiled in a boat mishap in the park involving Colleen, Paul, Crockett and the MP, he is returned to camp and placed in the guard house, where he reads another diatribe against him by Fisher. When Joey visits Mike, he is delighted to hear that Mike may be court-martialed and released from service, but a sober Mike finally admits he must take responsibity for his behavior. Upon leaving, Joey sees Colleen and reveals his belief that Mike may have turned the corner in accepting his position in the Army. Colleen hurries to Paul to ask for help in Mike's case. Mike is brought before Karger, who admits he was ready to court-martial Mike until Paul's intervention. Mike is placed on probation and given thirty days of hard labor. At the end of the grueling period, Mike has endured every challenge successfully and without complaint. When brought before Karger again, Mike learns he has been ordered overseas as part of an entertainment troop. Mike happily accepts his orders and is seen off by Joey and a happy Colleen, who promises to wait for his return.