JoJo's Bizarre Adventure 4x24

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...