In an alternate future, Earth stands depleted, a mere quarter of its population left behind after an enigmatic alien race relocated the majority to a distant M-class planet. As silence lingers over the globe, those remaining find themselves both the caretakers and the prisoners of their home. In this post-invasion world, humanity clings to existence in semi-subterranean sanctuaries, fearfully watched over by inscrutable extraterrestrial guardians patrolling the skies. Yet the alien presence