It’s summer, and Ca is living her typical life as a high school senior—commuting to school, sitting through the same classes, eating lunch with friends. But one day, a quiet question begins to stir in her mind: Is this world really what it seems? Through casual conversations and subtle signs of something being off, the question grows louder. Something isn’t right. She doesn’t know what it is yet—but she’s determined to find out. As she follows that thread of doubt, Ca uncovers a truth that will lead her to a final choice... one that could change everything.