Part 1 - Giorno?

After Koichi returns back to Jotaro and tells him about his time in Italy and meeting Giorno, Jotaro goes out to find Giorno himself. After finding out about Giornos new place as Don of Passione, and bringing Josuke for back up, he was expecting to only find Giorno there...but an old friend may also be waiting. (Part 5 spoilers ahead)