Kenneth Bellwood, an unscrupulous broker, discovers that hated business rival Robert Casson has secured a valuable option in Brazil and quickly determines to keep Robert in New York until it expires, arranging with Grace Barrows (a cabaret dancer who needs money to help her sick mother) to use her wiles to keep Robert at home. Robert quickly falls under her spell, and Grace increasingly regrets her duplicity. Grace's innocent young sister, Alice, comes to New York and falls under Bellwood's influence. Learning that Alice is going to visit Bellwood's apartment, Grace goes there herself, accompanied by Evelyn Dolores, Bellwood's former mistress. Grace leaves, Evelyn kills Bellwood, and Alice is accused of the crime. Evelyn commits suicide, leaving a note confessing to the crime. Robert forgives Grace, and Alice is sent home.