Barcelona, 1957. Daniel Sempere runs the Sempere & Sons bookshop, is happily married and has a son. No longer the child who discovered the Cemetery of Forgotten Books, he is still haunted by the mysterious death of his mother when he was six years old. Meanwhile his best friend and accomplice, Fermin, is about to marry the love of his life. But something appears to be bothering him. One morning, when Daniel is alone in the shop, a mysterious figure enters and buys a precious copy of The Count of Monte Cristo. Then, to Daniel's surprise, the man inscribes the book with the words 'To Fermin Romero de Torres, who came back from the dead and who holds the key to the future'