Doraemon 2: SOS! Otogi no Kuni

Doraemon has brought back a remarkable piece of future technology: a television capable of displaying any story ever told. Nobita and his friends sit down to watch famous fairy tales — only to find something has gone wrong inside the programming. An evil demon has invaded the storybook world and captured all of its heroes. The tales are running without the people who are supposed to be in them. Doraemon deploys another device to transform each child into one of the captured heroes, and one by one the group steps into the stories, fighting to rescue the originals and restore each tale to its proper ending.