Two brothers find themselves in a mysterious alien inn where escape seems impossible. Joined by a spirited girl and an alien companion, they team up under the quirky innkeeper to explore the cosmos, forge friendships, and make Inn 42 a renowned destination across the galaxy.
The drama tells the story of a group of individuals with different backgrounds who were unexpectedly drawn into a mysterious treasure-hunting journey during the late Qing Dynasty. Amidst the grand and tumultuous historical tide, they gradually strengthened their ideals of saving the country.
At the end of the Qing Dynasty, the biological expedition led by Qin Xiaofeng's father is attacked by a mysterious dragon, and the whole team is missing. His father's best friend, Xu Yuansheng, offers a huge bounty to gather a mixed team of dragon hunters to enter the mountain, and Qin Xiaofeng goes with them to find the dragon and save his father.