The Reikai Tantei run towards the main tower of the Labyrinth Castle; Hiei is sure that Suzaku, the fourth Beast, is hiding there.

In Ningenkai, Keiko tries to escape from Iwamoto-sensei and the other humans that were turned into zombies by the insects. Botan arrives to help her, and uses the comm to warn Yusuke that the zombies seem to be aiming Keiko specifically now.

Watching everything from his office in Reikai, Koenma urges Botan to protect Keiko. He's so upset about the situation that he misplaces the videoscreen remote control among the papers on his desk; when he finally finds it George already switched the image on the panel, so they can see where the Tantei are.

Suzaku and Muruge also watch the Tantei's approach through a large elliptic mirror, and are pleased to notice how the news from Ningenkai disturbed Yusuke. Suzaku wants to keep them from entering his chamber before the zombies get Keiko, so Muruge suggests that he send the Youshoku Ningen - humanlike creatures with no thought or will, incapable of fear or pain, that obey blindly their master's orders.

Those creatures surround the tower, blocking the Tantei's way. Yusuke wants to blow them all up with his Shotgun, but Kurama warns him that that's probably Suzaku's plan: making him waste his ki before the real combat.

Hiei has an idea: Kuwabara runs towards the Youshoku Ningen, knocks a few of them out and crouches down next to the tower wall; Kurama runs after him and climbs on his shoulders; Hiei comes next and jumps to stand on Kurama's shoulders; at last comes Yusuke, who uses his teammates' backs as a ladder to reach a window.

While Kuwabara, Kurama and Hiei fight the Youshoku Ningen, Yusuke runs to the upper chamber of the tower and finds Suzaku watching Keiko and Botan through the mirror. The girls are having trouble as more and more zombies approach the school. Keiko asks Botan what is going on, what happened to Iwamoto-sensei and where Yusuke is; Botan, with a nervous smile, promises to tell her everything later.

The phone lines were cut and Hatenaka-sensei was knocked out by the zombies; the girls can't find any help. Suzaku uses those images to tease Yusuke, who attacks him with a fast series of punches. Suzaku blocks the hits with his left palm - while the other hand holds the Flute - then jumps in the air. Yusuke tries to bring him down with the Reigan.

Surprisingly, Suzaku uses his fist to deflect the Reigan, which hit the tower ceiling, creating a large hole in it. "If you had hit me in some other point of my body, I might have been wounded. All I felt was a bit of itching in my arm." Muruge volunteers to hold the Flute, but Suzaku says he only needs one arm to defeat Urameshi.

The fourth Beast reveals that he caused the Reigan to hit the ceiling on purpose. Through the hole a lightning strikes; Suzaku absorbs its power and tries to punch Yusuke with it (the Ankoku Raijigen attack). The boy dodges but some of the sparkling rays brush his body, causing great pain and wearing his energy.

"A very strong ki protects you," says Suzaku. "It's the first time I see someone survive the attack." He suggests that Yusuke should take a last look at his girlfriend.

Urameshi stands up and takes off his shoes, wearing them on the hands as gloves. He says Keiko is too stubborn to give up. "She's just like me!"

Muruge mocks the idea of old shoes holding back Suzaku-sama's powers. Yusuke challenges Suzaku for a new round and the Beast summons the lightning again.

In the halls of Sarayashiki High, Botan and Keiko are cornered by the zombies. Keiko urges Botan to run away, since she - Keiko - is the attackers' goal. The ferrygirl replies that she'll always prefer to face the danger than turn the back on it. Keiko agrees, smirking. "I think we'll get along fine," says Botan.

They see a fire extinguisher and have an idea. While Keiko runs to the left and attracts the zombies' attention, Botan runs to the right, gets the extinguisher and sends a strong spurt of foam on them. But Iwamoto-sensei appears and grabs Botan.

Suzaku attacks, and Yusuke meets the lightning ball with the shoe-covered hands, focusing his ki on the wrists and using the rubber soles to protect his flesh. Getting Suzaku by surprise, Yusuke punches him on the cheek.

At the exact same moment, Keiko knocks Iwamoto down with a powerful slap whose strength surprises even herself.