You're a hunter, and one day, your agency puts you on a special mission with four other hunters.

The mission is to kill off the Phantom Troupe, and to find a certain someone and bring him back to the hunters agency as they need him. (Ging Freecss, Gon's dad.)

You walk into the room where you'll meet the others and be given instructions. Gon, Killua, Leorio, and Kurapika are all there, though none of them seem to notice you until your boss points you out.

Gon: Oh, hi there!