Doraemon: Nobita and the Knights on Dinosaurs

Doraemon built a hidden underground hideout for the group, but Suneo wandered off and got lost. After everyone else made it back outside, they realized Suneo was missing-and the entrance to the cave had collapsed. Forced to find another way in, they stumbled into a world filled with dinosaurs. A soldier named Vanho rescued them and claimed he had found Suneo. But when they reunited with Suneo, they discovered Vanho’s true intentions: his people planned to study Doraemon and his friends as human specimens and eventually take control of the Earth’s surface.