A big city swinger teaches his sheltered brother how to become a chick magnet.

Bored with living at home with his older, Jewish parents, young Buddy Baker packs his bags and arrives unannounced at the luxurious Manhattan apartment of his older brother, Alan, a fast-living, girl-chasing bachelor who never allows his duties at his father's artificial fruit factory to interfere with his pleasures. Pleased at his brother's show of independence, Alan buys Buddy a flashy new wardrobe and introduces him to New York night life. Their father becomes enraged at Alan's poor example and at his irresponsible loss of an important account. Buddy is such an apt pupil that he soon takes over his brother's private stock of liquor and begins dating his girl friends. After giving up Peggy, the woman upstairs, to Buddy, Alan is beaten up by the husband of another woman friend. He becomes frightened at the prospect of a serious relationship, alienating his favorite girl friend, Connie. Suddenly realizing the futility of his life, Alan urges Buddy to end his carousing and settle down, but Buddy is having too good a time. Their argument jolts Alan into maturity, and he decides to propose to Connie. Following their marriage, Alan discovers that his mother has left his father because of his bad temper, but Alan effects their reconciliation, successfully concludes a business deal, and bequeaths his bachelor apartment to the delighted Buddy.