Hunter x Hunter: The Last Mission

The strongest Hunters that once existed in the Hunter Association were split into "light" and "dark", and each walked down their respective paths. The "dark" side begins moving in order to massacre all Hunters! After a brutal attack from the "dark" side Hunters, Killua is injured and Kurapika is almost dead. What is the real goal behind the attack on all the Hunters? Now that the crimes of Netero & the Association are announced publicly. Will Gon take the dark side's path to find the necessary strength to save his friends? What actions will Gon take when the many crimes of Netero and the Hunter Association are unveiled...!?