This poem relates the Greek legend of Hero and Leander, young lovers living in cities on opposite sides of the Hellespont, a narrow stretch of the sea in what is now northwestern Turkey, and which separates Europe and Asia. Hero is a priestess or devotee of Venus (goddess of love and beauty) in Sestos, who lives in chastity despite being devoted to the goddess of love. At a festival in honour of her deity, Venus and Adonis, she is seen by Leander, a youth from Abydos on the opposite side of the Hellespont. Leander falls in love with her, and she reciprocates, although cautiously, as she has made a vow of chastity to Venus.