Vengeful ghosts cannot be killed, and ghosts kill without warning.
Humanity, with no golden finger to rely on, struggles to survive in this hell overrun by vengeful ghosts.
Ghosts cannot be killed.
But when people die, they can become ghosts and eat other ghosts.
This is an idea I wanted to write about. The final blurb won't be like this.
Theme: Even tiny humans can create infinite miracles.