This world has aliens. Zhang Chulan, who has just come into contact with the alien world, joins the organization "Nadutong" that manages aliens. In order to uncover the secrets of his grandfather and himself, Zhang Chulan and Feng Baobao go to the Tianshi Mansion in Longhu Mountain to participate in the grand event of the alien world - Luotian Dajiao, and fight against many alien masters.