Nobita feels frustrated with his life and wants to escape to a place with no rules or people. With Doraemon’s gadgets, he and his friends travel back 70,000 years to prehistoric Japan. There, they create their own paradise with futuristic tools. However, things get serious when they meet a boy named Kukuru, who belongs to an ancient tribe under attack by evil spirits led by a dark sorcerer Gigazombi. The group teams up to protect Kukuru’s people, facing wild animals, natural dangers, and powerful enemies. This movie beautifully combines fantasy, action, time-travel, and a deep message about friendship, bravery, and protecting those in need.