As  Shadowpaw  sat  there,  tucking  in  his  paws  and  his  tail  to  make himself as small as he could against the cold, the view in front of him began to  change.  A  red  stain  spread  over  the  icy  blue  of  the  lake,  the  color intensifying until the surface was blazing with scarlet fire. Shadowpaw felt himself being lifted up, as if he were a bird, passing beyond the trees until he could look down on the whole of the lake and the territories around it.
The fire raged more fiercely, spreading out into long lines that followed the boundaries of the Clans, until each Clan was separated from the others by leaping  walls  of  flame.  Then  the  fire  began  to  creep  inward,  greedily devouring the trees and undergrowth as it encroached on the camps.
“No... ,” Shadowpaw whispered, his eyes wide with horror.
There was no way for the cats to escape. Shadowpaw couldn’t see them, but he could hear their wails and screeches of terror. He could smell the smoke and hear the crackle of the flames as they roared around the rock where  he  crouched,  trembling  with  fear.  His  head  swam,  and  darkness swirled in front of his eyes. He coughed as ash caught in his throat and filled his lungs, gasping for breath as his senses spiraled away.
Before  Shadowpaw  could  lose  consciousness,  the  vision  ended  as quickly as it had come. Shadowpaw took in huge gulps of cold, clean air, gazing stunned at the forest, which was peaceful, snow-covered, unharmed. The lake was still frozen; even the smell of smoke had vanished.
The fire is coming, and the flames will scatter the Clans! he realized.

Lost Stars, Chapter 20