A 40-year-old journal holds a secret that sets Mark Valente on a search for Renata, the love of his uncle's life. The journal chronicles Peter Ahearn's isolated life as keeper of a nearby lighthouse and his passionate and dangerous love affair with the young Renata. But the Portuguese beauty denies everything, leaving Mark to question whether anything his uncle wrote is true. Now he must connect past to present, and piece together a picture of what really happened decades before…and he must grapple with his own burgeoning infatuation with the now middle-aged, mysterious Renata.