Calaf is a character from the opera Turandot, composed by Giacomo Puccini. He is a prince who falls in love with the cold and enigmatic princess Turandot. To win her heart, Calaf must solve three riddles posed by her, with the stakes being his life if he fails. In the story, Calaf's determination and bravery are central themes. His famous aria, "Nessun dorma," expresses his hope and confidence in winning Turandot's love. The character embodies the struggle between love and fear, making him a compelling figure in the narrative of Turandot.