In the slums of the upper West Side of Manhattan, New York, a gang of Polish-American teenagers called the Jets compete with a rival gang of recently immigrated Puerto Ricans, the Sharks, to "own" the neighborhood streets. Tensions are high between the gangs but two romantics, one from each gang, fall in love leading to tragedy.

This musical reworking of Too Many Husbands (1940), features Grable as a top singer and dancer who's been widowed by WW II. She marries her late husband's songwriting partner, Gower Champion, but the new marriage is thrown for a loop when Lemmon, her first husband, turns up very much alive and eager to see Grable.

A movie star helps a young singer-actress find fame, even as age and alcoholism send his own career into a downward spiral.