As climate catastrophe renders Earth uninhabitable, humanity sets its hopes on a new world: Arcadia. After years of deep-space slumber aboard the Atalante, crew member Dong Youngsoo finally awakens to a long-awaited paradise. But Arcadia is no Eden. The planet is under siege by alien invaders, and a native civilization fights desperately for survival. Caught between worlds, Youngsoo is thrust into a harrowing adventure that could reshape the fate of an entire species—and redefine what it means to call a place home.