"The Ballad of Tam Lin" is a traditional Scottish folk ballad that tells the story of a young woman named Janet who falls in love with a mysterious man named Tam Lin. He is revealed to be a captive of the Queen of the Fairies, who demands a sacrifice from him every seven years. When Janet learns of Tam Lin's fate, she bravely confronts the Queen to save him. To rescue Tam Lin, she must hold onto him tightly as he transforms into various creatures. Ultimately, her love and courage free him from the fairy realm, allowing them to be together.