High school senior Scottie O'Doul searches for the truth behind the deadly car crash that claimed the lives of her twin sister and the high school football coach.

Determined to regain her sense of accomplishment after losing her top-class ranking to Jonah, Grace decides to compete against him in a Labor Day half-marathon, but as they train together, she learns valuable lessons about what truly matters.

Two seventh graders, Drew and Mia, spend their summer in Half Moon Bay, California, training for a half-marathon, and supporting each other as their families struggle with medical and financial problems.