"What if you were the one?"

With those words, Arabella España is lured into a tale of forbidden love and forgotten secrets.

In the wake of a murder in 1950's Puerto Rico, nationalists revolt against American colonialism. An amnesiac recluse, married to a man she does not love, Arabella finds solace in the only remaining book in her possession. One of the many banned by Puerto Rico's Gag Law.

The mysterious novel entitled The Last Love Letter by one Aurelio Valentino leads Arabella on a journey with the main character in search of his lost love. But as she delves deeper into the story, she makes a shocking discovery: The novel contains clues to finding the legendary Labyrinth of Love Letters. A place of love and myth linked to the letter stolen from the corpse of the man who had recently been killed.

As each page draws Aurelio and Arabella closer together, she anxiously searches for the love letter that will reveal the identity of Aurelio's lost love. In her endeavor to find the labyrinth, she discovers that the murder is a fate tied closely to her own destiny.

Soon, Arabella's literary journey reveals memories of her forgotten past, and she discovers what happens when the main character of the story falls in love with the reader.