Army private Gene Kelly, who's also a talented trapeze aerialist, comes under fire for doing daring stunts without a net and alienating his high-wire cohorts; meanwhile, there's an elaborate 'camp show' to put on for Army soldiers and personnel, and the whole studio of M-G-M has shown up to join in the fun. Mickey Rooney plays M.C. (unctuously), introducing acts like Kay Kyser and His Orchestra, Bob Crosby, Benny Carter, and the M-G-M Dancing Girls (who appear to be dressed as vegetables). Red Skelton does a cute bit with Donna Reed and Margaret O'Brien, but the other comedic bits suffer from an apparent vacuum between the performers and the allegedly-live audience (they're awfully silent until the editor cuts to them for exaggerated reaction shots). Judy Garland sings an inappropriate song about a jumpin' night at Carnegie Hall (improbably accompanied by classical pianist José Iturbi, whom Judy calls 'hep'). The production is glossy, but the manic energy feels false, fabricated. ** from ****