The film continue the story of Bastian and his friends in the imaginary world Fantasia. As Bastian has grown up, his father marries a woman and his step-sister is not happy about their family so she decides to bully Bastian. Bastian has to refuge in Fantasia to escape from her. Unfortunately, she discover the book and try to destroy the Fantasia world. Bastian and his friends must stop her to defend their beautiful world.