Synopsis from ANN:
“The strongest Hunters that once existed in the Hunters 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! What actions will Gon take when the many crimes of Netero and the Hunters Association are unveiled…!?”
The film will feature the president of the Hunter Association, Netero, but it is unknown if this will occur before or after the Ant Arc. The film will also feature a return to the Heaven’s Arena.
Check the official website out here.