After Miriam Gibson is seduced and abandoned by a handsome adventurer, who marries an old woman with money, she becomes a prostitute to get money for her new-born child. When the baby dies, Miriam, now without hopes, goes to London and becomes the mistress and housekeeper of barrister Geoffrey Sherwood, who has become a drunkard after having been jilted by his fiancée Valentine, when she married a wealthy baronet. Miriam hopes to marry Geoffrey, but when Valentine, who is unhappy with her baronet, begins to trifle with Geoffrey, he responds and discards Miriam. Geoffrey soon realizes the shallowness of his affair with Valentine, who has not divorced the baronet, and his sense of shame is awakened by Miriam's kindness and consideration for others. They marry in a little Scottish kirk, and sail for Buenos Aires to begin a new life.