What would you do if you only had one summer to live?

It’s 1988, and 17-year-old Eric is rock climbing in Canyonlands. His muscles strain, his legs shake, and he is about to fall to his death. He jumps for a hold at the edge of an overhang…

…and misses.

But a pair of slender hands grabs his wrists and pulls him up.

When he scrambles to the top of the cliff, he sees his benefactor, a beautiful spirit called a fetch. She tells him that if he lives his life to the fullest, if he tries everything he’s ever wanted to do—if he inspires her—she will make him invincible for the summer.

But at the end of the summer, on the eve of his eighteenth birthday, he will die.

Eric takes her hand and accepts the deal.