In a not-so-distant future, the city of Megasaki faces a canine crisis due to the emergence of a disease affecting dogs. The government, fearing the spread of the virus, decides to exile all dogs to a deserted island full of trash, where they become trapped and abandoned. Among them is Spots, the loyal companion of Atari Kobayashi, a young boy who refuses to accept losing his friend. Determined to rescue him, Atari flies to the island in search of his dog and embarks on an exciting adventure.
On the island, he meets a diverse group of dogs, each with their own story and distinct personality. From the wise and cynical Chief to the optimistic and loyal Duke, these canines form a peculiar brotherhood that comes together to help Atari in his mission. As they navigate the dangers of their environment, they face both the threats posed by humans and the internal conflicts that arise among them.
The story blends humor and action while exploring themes of friendship, loyalty, and the struggle for freedom. With a unique visual style that combines stop-motion animation and an endearing narrative, the young protagonist and his new furry friends will confront unexpected obstacles, revealing secrets about the relationship between humans and animals. Ultimately, it is a poignant odyssey that underscores the importance of loyalty and kindness in difficult times.