Title: The avatar battle
Description: The evil Muns tries to convert Abby into helping him change the history of the world while her and Derick's grandfather asks Derick to finish a challenge that a trusted teacher was never able finish.
Subjects: Space and time, Fiction, Boarding schools, Schools, Twins, Brothers and sisters, Grandfathers, Children's fiction, Space and time, fiction, Schools, fiction, Twins, fiction, Brothers and sisters, fiction, Grandparents, fiction, Fantasy fiction