Eadie Allen (Alice Faye) is a chorus girl who dreams of becoming a star. While working at a New York nightclub, she meets Sergeant Andy Mason (James Ellison); they fall in love but he is shipped off to war. As Eadie becomes the headliner at the nightclub, Andy comes home a war hero. But complications arise when Eadie finds out Andy is unofficially engaged to another woman. It's up to Eadie's friend and nightclub co-star Dorita (Carmen Miranda) to set things straight. The Gang's All Here is filled with leggy chorus dancers and lavish musical production numbers including Faye's flashy neon finale "The Polka Dot Polka."