Lester Phillips finds that the allurements of Beatrice Esmond, an adventuress, have attracted him, and he endeavors to disentangle himself. But she loves Lester and is trying to keep his love inveigles her admirer, Zolan, into going to the home of Lester's sweetheart to poison her mind against him, which he does, Beatrice then fascinates Lester's young brother, Francis. To save his brother from becoming a victim of the adventuress, Lester writes a note to Beatrice saying that his love for his affianced wife, Agatha, was all a mistake. Lester is caught in the arms of Beatrice by Zolan who rushes immediately to the home of Agatha. Zolan takes Agatha and her father to a restaurant where they see Lester nonchalantly drinking with Beatrice. She writes a note to Lester, breaking her engagement with him. To a banquet given at the home of Beatrice, Lester invites his brother, where the latter learns the true state of affairs. Having saved his brother, Lester sends a note to Beatrice, reading: "As you used my brother to injure me, I have used you to save him. Henceforth, we are strangers." She calls on Lester and attacks him. In the ensuing struggle, Zolan, who has followed Beatrice to Lester's apartments, fires a shot and kills tie adventuress. Lester is arrested. But through the clever work of Agatha, who having learned of the reason of her sweetheart's feigned affection for Beatrice, Zolan is captured, and Lester liberated.