In episode 11 of 91 Days , titled "All for Nothing," the "piece" being prepared is the final stage of Avilio’s (Angelo's) intricate plan for revenge against the Vanetti family . The episode centers on the grand opening of the Vanetti Playhouse, a project that was Don Vincent's lifelong dream. The Plan for Revenge
Avilio coordinates with Ganzo Alary to execute a multi-layered assassination during the opera performance: 91 Days Episode 11
The episode concludes with the playhouse opening. As the opera begins, the carefully prepared "pieces" fall into place, leading to a chaotic shootout that leaves the Vanetti family decimated and sets the stage for the series finale. If you'd like to dive deeper, I can: In episode 11 of 91 Days , titled
: Ganzo provides Avilio with the layout of the playhouse. Vincent's room is bulletproof and has no outside doorknob, requiring a key or for someone inside (Nero) to open it. As the opera begins, the carefully prepared "pieces"
: Nero visits his dying father, Vincent, who reveals that Testa Lagusa (Avilio's father) was actually his best friend. Vincent is haunted by the regret of killing him for the sake of the "family". The Climax
The "preparation" also involves mental and emotional manipulation:
: Avilio intends to kill both Don Vincent and Nero Vanetti.