It has been fifteen years since the bloody New Year's Eve incident. Now, the world believes that the giant robot destruction plan was orchestrated by the evil terrorist Wise, while the mysterious person wearing a strange mask who saved the world is revered as a deity by many. He issued a prophecy stating that humanity will soon face an overwhelming disaster, and only those who believe in him will be saved. Snow replaced the missing Wise and raised his niece Megumi. Megumi has grown into a smart and lively high school student who knows it was actually her uncle and his companions who resolved the crisis. She is very upset about the distorted history lessons at school. Bridoni was pursued after witnessing the killing and silencing by the People's Party. Megumi helped him hide, and the young police officer Chouma, moved by his story, also lent a hand. Since the country has fallen under the control of the People's Party, Megumi is considered a heretic at school and is sent to the People's Garden for learning, which is a brainwashing facility. Megumi and her classmate Ogawa Kyoko arrive at the People's Garden. Due to their excellent performance, they enter the additional stage where the world of the year is recreated. Megumi explores in the science classroom of her elementary school, while Kyoko searches on the rooftop platform of the teaching building, uncovering the truth about the People's Party. Meanwhile, the scattered comrades from the secret base are separately conducting underground resistance. Achi plans a jailbreak, Gi Chang leads his team lying in wait, Maruo patiently awaits the opportunity, and Amen discovers the real prophecy book after relentless investigation. Bacteriologist Yamane, the former transfer student Sata Kiyoshi, and childhood memories of Takashi gradually resurface. After all, who is the Friend? Can the crisis that has already descended upon this world be resolved?