Welcome to Brighthead, Maine, a coastal town where the runners are fast and the summers are slow.Fleeing a broken engagement, Charlotte crash-lands in Brighthead with the excuse that she's house-sitting for her aunt. Alone in a coastal mansion with a border collie who's equal parts energy and mischief, Charlotte reaches out to her only friend from her childhood summers: Brandon, the gardener's son. He'll run with the dog. He'll also run with her,...