Doraemon The Movie 2007

Frustrated by the multitude of problems at school and at home, Nobita wonders if his life would be easier if magic really existed. He then asks Doraemon for his what-if-telephone-booth gadget which allows both to go to a parallel world where magic is ordinary to all. In the fascinating alternate reality, they find out that a demonic planet is approaching and threatens the lives of everyone over there. Doraemon, Nobita, and their friends must then find a hidden tome written by a wizard that defeated a similar menace a long time ago.

Synopsis from Anime News Network