High-school girl Yuri suddenly finds herself on the rooftop of a high-rise building. She's trapped in a bizarre world surrounded by skyscrapers, where a masked man cracked open a man's head with an axe before her eyes. Finding a way to survive this bizarre world, find her beloved brother, and escape becomes her top priority, but she is beset by danger not just from the mysterious Masks, which possess both inhuman strength and cruelty, but other survivors turned cruel or desparate by the insanity of the high-rise world.
Episode 1
Transported to the top of a skyscraper, Yuri desperately tries to evade a masked killer, but her escape routes are few.
Episode 2
Mayuko kills others without any hesitation, desperate to escape. An encounter with Yuri brings back her sense of humanity.
Episode 3
Rika confirms that his sister Yuri is still alive when she calls him. Soon after, he faces the wrath of a masked baseball pitcher.
Episode 4
Sniper Mask looks to help a scared Kuon. Yuri and Mayuko head toward Rika, but the saw-wielding Chef Mask has other plans for them.
Episode 5
Seeking revenge for his annihilated crew, Tanabe pleads for Yuri and Mayuko's help taking down "God Candidate" Aohara and his masked killer, Ein.
Episode 6
Mayuko vows to keep fighting until Yuri reunites with her brother, but she realizes it may only be a matter of time before she loses her mind.
Episode 7
Yuri acquires new powers. Rika and his allies reach Yoshida, but they face fierce opposition from Police Mask and her killer army.
Episode 8
Mayuko and Yuri reunite on top of a skyscraper amidst a grenade attack. Now held hostage, Rika is summoned before a God Candidate.
Episode 9
Aikawa deploys a sniper to Yuri's location in a move to eliminate other God Candidates. It's a battle of equals as Sniper Mask takes on the threat.
Episode 10
Aohara, Tanabe and the others approach Yuri to form an alliance. Mayuko and Kuon come to Sniper Mask's aid when he starts to lose his mind.
Episode 11
With Yuri and her allies' location exposed, Aikawa dispatches an elite team led by Police Mask to purge those who disagree with his ideology.
Episode 12
Archangel destroys everything in his path in the name of justice. Mayuko and the others stand in his way, but who will die, and who will prevail?
