A mystery train hurtling through space sounds like sci-fi setup, but this is Doraemon doing what it does best: taking a simple premise and folding genuine dread into it. The alien virus plot turns the confined space of the train into a slow-burn paranoia machine where nobody knows who's infected. It's the franchise's willingness to let the stakes feel real, even in a kids' movie, that makes the difference between a fun romp and something that actually sticks with you.
Nobita and his friends board the Galaxy Express, a magnificent space train heading toward an orbital theme park unlike anything they've ever seen. What should be a joyride through the cosmos turns into a desperate fight for survival when an alien plague emerges from the depths of space. These hostile microorganisms aren't content to simply infect their hosts,they're hunting for bodies to inhabit, growing stronger with each new victim they claim. Trapped aboard the express with nowhere to run, the group must rely on Doraemon's arsenal of futuristic gadgets and their own resourcefulness to outsmart an enemy they can't even see. The train becomes a prison hurtling through the void, and every passenger is a potential threat. As the infection spreads, trust fractures and panic sets in. The kids discover that escaping this nightmare means understanding what the aliens truly want, and whether they're willing to sacrifice everything to stop them. A high-stakes thriller that transforms a dream vacation into a harrowing journey through space.