In a world without life, Leon and Hazel, two students, wake up to find themselves alone. They decide to find each other, facing strange encounters and Leon's own inner struggles. A shadowy figure appears, warning them of a looming disaster. United by fate, they gather supplies and navigate through a war-torn land. Reaching a tower, they discover an empty yet meaningful letter. It reveals a terrifying truth: another planet is about to collide with Earth. With the world's survival at stake, they must act quickly to save the world from destruction and become its last hope.