Everybody in Greed Island participates in a quiz. Gon scores the highest with 87 correct out of 99 questions, wins card #00, and gets instructions to go to Greed Island Castle. There he meets 2 other game masters who give him his reward, a small binder which can be used to take three Greed Island cards out into the "real" world. With Killua and Biscuit they finish the game and leave Greed Island. Once outside Gon and Killua uses the card Accompany to fly to the player with the codename "Nigg", which Gon believes is an alias of his father, Ging. This episode ends exactly at Chapter 185, page 10-11 of the manga. (thetvdb.com)