In the town of Guanajay, Cuba in 1945, a young girl named Gabriela tells her childhood friend, Nuno, to steal one of her father's books, a guide to loving and fully appreciating women. After Nuno takes the book home and reads it, the world soon begins to look very different, with one particular day turning to night, fireflies lighting up the sky like stars, and Gabriella appearing to him as an angelic being with wings. Separated by events beyond their...