A year ago, Rachel Bird hated it in small-town Aspen Lake. She and her little sister, Jane, had just moved in with grandparents they never knew they had. But this summer looks very different. Rachel has a best friend, a boyfriend, and she gets to ride her horse, Magic. They are all sweltering under a heat dome, and though Rachel's heard about the dangerous wildfires, they seem very far away.
Then the grass turns yellow and Rachel smells smoke...