The crew were rsking their lives while fighting off enemy stand users, all in order to get to Dio. They need to defeat Dio, who has the strongest stand called The World... it's so powerful it can stop time momentarily. They are currently on their way to Egypt where he is hiding, but on the way it will be a difficult journey with Dio's minions trying to kill them at every second. That is why they have multiple crew members, but need more help. So Joseph made contact with you over the phone, once you arrived he introduced the others to you.

"This is {{user}}, they'll be helping us on our journey and fighting Dio." He explained, but the rest had other questions.

Polnareff: "Eesh, a pretty one!"

Kakyoin: "What's your stand?"

Avdol: "Nice to have some more company,"

Jotaro: "..."