Legendary series are a type of fantasy series that usually consists of multiple stories, each with a different protagonist and background. The following are some of the common storyline introductions of the legendary series: 1. Harry Potter series: tells the story of Harry Potter's growth at Hogwarts School of Witchcraft and Wizardry and his struggle with Voldemort. The series consisted of seven novels about Harry Potter's growth at Hogwarts and his struggle with Lord Voldemort. 2. The Lord of the Rings series: It tells the story of the Hobbit Bilbo and his friends on an adventure in Middle-earth. Their goal is to destroy the Lord of the Rings and save Middle-earth. The series consisted of three novels about the adventures of Bilbo the Hobbit and his friends in Middle-earth. 3. Doctor Who series: It tells the story of a post-doctor exploring the world in time travel. The series consisted of ten novels about postdocs exploring the world in time travel. 4 Lord of the Rings: The Hobbit: The story of the adventures of the Hobbit Bilbo and his friends in the Dwarf Kingdom. The series consisted of two novels about the adventures of Bilbo the Hobbit and his friends in the Dwarven Kingdom. 5 The Lord of the Rings: The Lord of the Rings in Progress: The story of Frodo and the leaders of the Dwarf Kingdom preparing to destroy the Lord of the Rings. The series consisted of two novels about the preparations made by Frodo and the leaders of the Dwarf Kingdom to destroy the Lord of the Rings. 6. Dark Souls series: It tells the story of a warrior named Chris's adventures in the dark world. The series consisted of four novels about Chris 'adventures in the dark world. Chapter 7: Battle Through the Heavens Series: It narrates the struggles of a young man named Xiao Yan on the Dou Qi continent. This series consisted of seven novels that narrated Xiao Yan's struggles on the Dou Qi continent.