After apparently failing Polpo's test, Giorno is attacked by his stand, Black Sabbath, who tries to pierce his soul with a stand arrow.

After defeating Zucchero, the gang realizes that he has already told someone else where they were going and why.

"Take Trish to Venice." With their next order from the boss, Bucciarati and his crew head to Naples Station. "Use the key at the water fountain with the turtle on the 6th platform." They find the water fountain, but can't find the place to use the key. Meanwhile, Proscuitto and Pesci from the Hitman Team follow Bucciarati and the others to Naples Station. Bucciarati figures out the mystery behind the key and gets on the express train to Florence, and Proscuitto and Pesci follow.

After defeating Squallo and Tiziano, Bucciarati and the others head off to Sardinia to find out about the boss's past. They head to Marco Polo International Airport in order to get a jet, but a strange man was following them. Mista manages to kill the strange Stand user before they're able to call upon their Stand. Even though they're a bit put off at how simple that was, they get onto the jet and fly off. But once they're on the jet, Giorno hears a weird noise...

The Stand arrow's rightful owner is finally revealed.