The Girl in the Red Velvet Swing is the true story of Evelyn Nesbit Shaw, a beautiful showgirl caught in a love triangle with elderly architect Stanford White and eccentric young millionaire Harry K. Thaw. Mr. White buys Evelyn an incredible apartment, but insists that she perform for him on a red velvet swing he has fashioned in the living room. As Evelyn swings above the salivating White, Harry K. Thaw is across town pining for her. Eventually Thaw and Evelyn marry, but he makes her life miserable with his jealousy. White continues to pursue Evelyn romantically, and Thaw becomes enraged. During Evelyn's performance, a jealous husband confronts a philandering playboy on the roof of Madison Square Garden. The result changes Evelyn's life forever.