Nobita's escape fantasy gets so weird that Doraemon ends up building a time machine to find unclaimed land, because the actual problem, nowhere left to run to, is too real to solve any other way. The movie takes that desperate logic seriously enough that it pivots into genuine prehistory, where a kid and his robot cat have to save a tribe from a dinosaur-shaped god while still carrying the weight of their original problem home. Comedy lives in that collision between the absurd solution and the real feeling underneath it.
Nobita's latest escape fantasy hits a wall: there's nowhere left to run. Every inch of the world has an owner, a landlord, a fence. When his friends discover the same restlessness, even Doraemon admits defeat. One solution emerges, mad as it sounds. They'll use the time machine to slip backward, far enough that humans haven't walked the earth yet. Free land. Fresh start. But prehistoric Earth isn't empty. A tribe struggles to survive, hunted by an inexplicable threat: Gigazombie, a creature that shouldn't exist, that defies the natural order. Nobita and his group find themselves caught between their escape fantasy and an unexpected responsibility. Helping strangers feels easier than fixing what's wrong at home, yet saving a people from extinction demands something they didn't plan to give. Adventure and comedy collide with genuine stakes. The film asks whether running away solves anything when you carry your problems with you into any timeline, any world.