The stage is Tokyo in 2030. A high-frequency resonance sound is suddenly detected in the suburbs of Tokyo, and the city is covered by red fog. Moreover, all animals and humans who hear this sound lose consciousness. As the functions of the capital are paralyzed, the government temporarily moves the functions of the capital to Osaka, predicting that this phenomenon is a virus of unknown entity, and blocks Tokyo out of fear of the plague. But six days after this "great resonance", the people who lost consciousness woke up as if nothing had happened. After that, the blockaded city Tokyo gradually regained its functions, but with this day as the dividing line, various "abnormal events" began to occur, and people began to be eroded by further abnormalities one after another. Among them, there are also young people who have liberated the power hidden in their blood and awakened as "vessels of heroic blood" - they are attracted to each other's power, meet each other irresistibly, communicate with each other, kill each other, and are gradually swallowed by the cruel chain of fate.