Since Voldemort, the most dangerous dark wizard of all time, has returned, chaos and violence reign in the magical world. When Harry Potter and his friends Ron and Hermione arrive for their sixth year at Hogwarts, the strictest security measures are in place at the wizarding school. Dumbledore aims to protect his students from the clutches of evil. To prepare Harry, he explores the history of the Dark Lord with him. Can Harry's potions book, which once belonged to a Half-Blood Prince, help him? Only one detail is missing, which Harry must find, and then the secret of Voldemort will be revealed. Dumbledore guides him, but at the crucial moment, the Half-Blood Prince appears and shows his true face.