At the end of Operaci n Quatuor, Terexa Viginti has discovered the mystery surrounding her life. From now on she must prepare to become the successor of the famous Quatuor as president of the Institute of the Brethren of the Holy Cross. She then discovers that Mars holds another secret that very few know about, which links this book to the first novel in the tetralogy. Suddenly, Terexa Viginti becomes the successor to Irene Pinedo, the protagonist...