Long ago, a demon/devil was kept away for many years by the Three Fairy Spirit Stones. The stones had sealed the demon, however, one day he found a way to escape and caused havoc in the Fairy World. The Princess of the Sky was told by her father to go to the Human World and get back Doraemon's Four Dimensional Pocket. Doraemon and Nobita's friends decide to follow the princess and try to get Doraemon's pocket back. Later the Princess tells the gang that she was changed forms by the demon and had Doraemon's pocket. However, Doraemon's gadgets were lost and were in different places such as Fairy World, Earth, Sea, and Sky.