A meteorite fell into the flat star of the Western Milky Way, and a monkey boy was born. No one knew his origin and hidden mysterious power. The monkey boy was cultivated by his master Bodhi Immortal to become a strong man in the universe, but he got into trouble because of his playful and competitive nature, and was trapped in the mountains for thousand years.

Time flied. The Earth has changed from the past, and the civilisation and technology are advancing day by day. Princess Tang San, the technological genius of the Tang Dynasty on the Earth, hides the power of the galaxy and becomes the target of all monsters. Princess Tang San inadvertently releases the monkey boy who has been trapped for thousand years when she is escaping from the pursuit of the monsters. However, the released monkey boy has turned from a boy to a girl...