Synopsis
A mysterious gust of wind sweeps across the world, erasing everyone's memories. Cars crash, planes plummet, and society collapses into chaos. Amid this turmoil, a young man wanders until he enters a military research center. There, he meets Johnny, a boy whose memories were preserved due to an experimental procedure. Johnny names him Wataru, shares all the information he has, and then succumbs to his failing health. Motivated to find others with intact memories, Wataru ventures through the desolate landscape. In San Francisco, he encounters a mysterious silver-haired woman named Sophia, whose past she keeps hidden. She reveals her destination as New York and opts to travel alongside Wataru. As they journey across America, they uncover the remnants of fallen society and explore the essence of humanity.
