The events of the Japanese detective anime series "Zankyou no Terror" unfold in a modern alternative Tokyo. On one peaceful summer day in the city, a major terrorist attack occurs. While politicians and journalists speculate about who is behind the sinister terrorist group "Sphinx," two young culprits hide on the outskirts of the city. They are ordinary teenagers, each with their own reasons to seek revenge against the traditional social regime. They embark on a dangerous game with many moves.