The nostalgia of a child's summer afternoon can be intoxicating. Tinkling ice cream trucks, games in the yard, young love, swimming pools. For one young boy and his family, days like these can be heaven. Dream-like. Like any dream, however, things can change. Heavens can fall into darkness, games turn deadly, love become hate. And the seemingly safest places of our world - filled with that sweet, sky-blue nostalgia - can curdle and implode, tearing...