Doraemon Movie 35: Nobita no Space Heroes

Nobita dreams of becoming a genuine superhero, so Doraemon brings out a gadget that lets him and his friends shoot their own heroic adventure. Their make-believe battle takes an unexpected turn when Aron, an alien from the distant planet Pokkoru, witnesses their abilities and asks the group to save his home.

Still convinced that everything around them is part of their production, Nobita and the others travel into space and enthusiastically play their roles. Only after the danger becomes impossible to dismiss do they realize that the villains threatening Pokkoru are real, leaving five amateur heroes to protect an entire planet without a script to guide them.