Tulan girls Xilan and Suzi fell in love with a man named Hou Xihui. They both came to Chongqing in order to find him. In this city, Hou Xihui disappeared like a wind. However, the two girls did not want to give up, they decided to stay in the city trying to find the man.

Humans built huge engines on the surface of the earth to find a new home. But the road to the universe is perilous. In order to save earth, young people once again have to step forward to start a race against time for life and death.