Nobita rescues a drowning dog and names it after the sound it makes, and that's when the movie hooks you. The casual kindness of hiding a pet in a magical drawer becomes the emotional center, the thing that makes everything else matter. A Doraemon film that earns its adventure by starting with a kid who couldn't just walk past something that needed help.
Nobita rescues a drowning puppy from the riverbank and smuggles it home using one of Doraemon's gadgets, naming it Ichi. Before long, he's collected a growing menagerie of stray cats and dogs, each with their own personality and backstory. When his parents threaten to send the animals away, Nobita hatches an ambitious plan with his friends: use Doraemon's time machine to transport the entire pack to a prehistoric era, 300 million years in the past, where they can live freely without human interference. The journey itself becomes the adventure. With Doraemon's evolution ray allowing the animals to operate survival equipment, the group travels backward through time and discovers that this era holds secrets beyond what they expected. What begins as a rescue mission transforms into something far more complicated, forcing Nobita to confront what truly helping these creatures means. Equal parts heartfelt and chaotic, this film balances Doraemon's signature whimsy with genuine emotion about responsibility, friendship, and sacrifice. It's a story about second chances that refuses to play things safe.