Gon and Killua set off for Masadora in search of spell cards. On the way, they run into many different monsters. However, they struggle against some of the stronger monsters. A girl named Biscuit watches as they fight their way through.

Gon and Killua join Kite's team as they investigate the Chimera Ants. The Chimera Ants are dangerous insects that can pass traits from the prey they consume to their offspring. As Kite begins to fear the worst, the Chimera Ants begin to feed on humans.

Gon's party confronts Youpi while Pouf and Pitou rush to the palace to assist the king, who is distraught with Komugi's condition as she gets herself badly injured during the attack.

Netero convinces the king to fight him by revealing that he will tell him his true name once defeated. The chairman then unleashes his most powerful technique that despite striking the king countless times, olny manages to scratch him.

The King still struggles to retrieve his memories as he and his two remaining Royal Guards return to the palace. He eventually knocks out Meleoron and Knuckle Bine with his En, and later engages Shaiapouf and Menthuthuyoupi in a race against time. Meanwhile, only two remain, Palm and Ikalgo, and hide an unconscious Komugi underground.

Killua reunites with his sister Alluka and uses her as a leverage for them to be allowed to leave the Zoldick state, as her powers can only be used to heal Gon if she is close to him. Meanwhile, Illumi asks for Hisoka's help to stop Killua's plans, and with elections yet to reach a conclusion, the Zodiacs keep arguing about a possible way to bring it to end.