Doraemon Movie 10: Nobita and the Birth of Japan

Nobita, frustrated with his living situation, considers running away from home, but ultimately has nowhere to go as all the land is privately owned. His friends, including Doraemon, soon share his desire to escape. To find unclaimed land, they devise a plan to travel back in time to the prehistoric era, when humans did not yet exist. There, they assist a young boy in rescuing his tribe from an ancient threat, a creature known as Gigazombie.