In one year, the moon will crash into the Earth. The world has already begun to unravel. Governments fall, oceans rise, and gravity itself is beginning to shift. As humanity braces for impact, two former friends cross paths again, each clinging to their own vision of how the world should end.

Rika Endou refuses to let go. Driven by denial and desperation, she searches for a way to stop the inevitable, chasing fading hope through dying cities and abandoned science. Meanwhile, Sayo Morisaki welcomes the end with quiet acceptance, choosing instead to witness the beauty left behind.

Together and apart, they travel through the last days of Earth, chasing memories, miracles, and the meaning of goodbye.

When the sky begins to fall, what will you hold on to, who will you find?