The pastoral dog Balang was accidentally shipped to Shanghai due to an error in the shipping form filled out by his owner. There, he befriended the tabby cat Fudou and the pigeon Feimao. Along the national highway on his journey back home, he endured the heavy snow in Nanjing, the drone crisis in Luoyang, the sandstorm in the ancient city, and dangers in a western town. Crossing through winter, spring, summer, and autumn, he finally reunited with his family. Throughout the winding journey, he witnessed the power of friendship and the unwavering desire to return home.