As the sun is dying out, people all around the world build giant planet thrusters to move Earth out of its orbit and sail Earth to a new star system. Yet the 2500-year journey comes with unexpected dangers, and in order to save humanity, a group of young people in this age of a wandering Earth fight hard for the survival of humankind.
A debt-ridden animal-breeder falls in love with a fox demon who tries to pay back her debt of gratitude for him.