Lin Chuan, an ordinary office worker, woke up and found that he had turned into a red, round and friendly precious animal skin named Gumon. He retains human wisdom and memory, but can only make the cry of "pigupigu". He must try to survive in this dangerous world filled with giant monsters. By chance, he used his tiny body and human wisdom to help humans fight off monsters, thus attracting the attention of the human defense force. While being brought back to the base for research, Lin Chuan struggled to adapt to Pigumon's body while desperately searching for ways to communicate with humans, trying to reveal the truth that he was human. This is a unique adventure about survival, communication and identity recognition.
