In the year 2055 AD (333 years of the planet Bermuda), an international research flying saucer led by Chinese captain Mo Jiahai was searching for planets with signs of life in space. They found a humanoid planet but ran out of energy while performing space shuttle and could no longer start up just after reaching this planet. The surviving Earthlings found that their bodies' respiratory systems could not fully adapt. Unwilling to pin their hopes entirely on the AI robots, some of the Earthlings endured the uncomfortable air and stepped out of the ship, where they secretly reproduced on the planet. Hundreds of years passed, and the Earthlings who gradually adapted to the planet Bermuda also reproduced secretly from generation to generation, with the secret of the flying saucer buried deep in the desert of the planet.

The film tells the story of the eccentric crab goblin Yan Ruyu, who was forced to marry an ugly old bull demon king as a concubine and, yearning for freedom and looking for true love, fled to the human world using the legendary "thunder" method to meet a cold demon hunter Yun Zhongjin. As a child, Yun Zhongjin was killed by an evil demon and his whole family was wiped out. When he meets Yan Ruyu, the two grow up together and share their hardships.