Sangi dikutuk menjadi naga. Namun, selama dia bisa merahasiakannya, dia hanya akan menjelma menjadi naga satu hari dalam sebulan. Dia bahkan menjadi lebih kuat dan awet muda. Namun saat usianya tua, anak cucunya mulai bertanya-tanya. Mengapa Sangi terus kuat? Apa rahasianya? Sayangnya Sangi keceplosan, dan dia menceritakan rahasianya. Apa yang terjadi kemudian?

Sangi was cursed to be a dragon. But, if he could keep this secret, he would only changed into a dragon once in a month. Outside of this, He would even get stronger and stay young. When Sangi was older, his children and grandchildren started to ask him: what was it that making him an ever-strong man? What was the secret? Unfortunately, Sangi could not contain it anymore. He told them his secret. And what happened after that?