When a teenager loses his girlfriend in a tragic accident, he finds that running keeps him connected to her during his "runner's high" moments. Chasing her memory drives him to run faster, and to win for his new coach. Before long, however, his newfound noteriety attracts the attention of a whip-smart new girl who is determined to find out what's really going on inside him. Soon, he finds himself caught between keeping the past alive and making new memories in the present.