tristan falls in love with his beloved uncle King Mark's wife, Isolde. Involved in a bitter love triangle where all parties have love and respect for the other, Tristan and Isolde cannot deny their passion for each other and ultimately begin an adulterous affair. When King Mark finds out, he flies into a rage and kills his nephew Tristan with a poisoned sword. When Isolde learns of his death and sees his corpse, she dies of grief and falls over upon him.