David McCare, the love liar, is a musical genius, the idol of society, hated by men and worshiped by women. He casts off his mistress, Margie Gay, for a new love, Diana Strongwell, an heiress. Margie pleads with him to take her back, but McCare gets rid of her through the services of Ludwig, his valet, and a broken-down musician. Ludwig is also in love with Margie. McCare marries Diana, much to the chagrin of Edna Carewe, a friend of Diana's, who is also attracted by the musician. They live happily for a short tune until McCare becomes discontented and makes advances to Edna. Meanwhile Margie finds the narrow path a stony one. A woman of the streets suggests the easiest way. Margie shrinks but finally consents. The first man she accosts is Ludwig, who leads her to her home and offers marriage. She is reluctant at first, but eventually agrees, and they are married. At a dinner dance given by Diana, she catches McCare making love to Edna.