Because the frail and sickly Shunyi (Park Baoying Bo-yeong Park) needs recuperation, Shunyi mother and daughter moved from Seoul to a villa in the countryside. While tidying up the house, Shunyi accidentally found the wolf boy left by the mysterious former owner Dr. Park here (Song Zhongji Joong-ki Song). Out of kindness, Shunyi's mother took in the boy who was still alive by wolf nature and named him Zhe Xiu, so the four people began to live under the same roof. At first, Shunyi resented the intruder who could not speak and ate hungrily, but getting along day and night gave Shunyi the idea of taking care of training Zhe Xiu. She began to teach him to eat, read, read, and play the guitar to Wolf Boy, while Zhe Xiu was very interested in the warmth of Shunyi and seriously did what Professor Shunyi gave her. The lonely Shunyi became happy because Zhe Xiu gradually integrated into his own world and had a different kind of love for him. But this beauty is broken by Zhitai (Liu Yanxi Yeon-Seok Yoo), who is eyeing the wolf child covetously. He is bent on gathering and provoking various forces to hunt and kill Zhe Xiu. Shunyi in order to protect Zhe.