For a beautiful summer month, private-practice veterinarian Katherine Reese opens her home and heart to James Levine, a blind man whose seeing-eye dog contracts a deadly but treatable illness. Despite his disability, this newcomer views his world through a lens of quiet contentment, in contrast to the lingering sorrow and resentment displayed by his host. James offers the single mother of two the prospect of hope and resolution, as he shines with an intangible charisma that is utterly compelling … an amazing light reminiscent of the fireflies he finds with Katherine one sunset evening. The result is a story of faith, forgiveness, and unexpected healing.