In an alternate iteration of the present, Tokyo has been hit by a terrorist attack that has devastated the city, with the only evidence of the culprits being a confusing video uploaded to the internet, which only spreads paranoia throughout Japan. Unbeknownst to the authorities is that the terrorist masterminds who call themselves "Sphinx" (スピンクス, Supinkusu) are two teenaged boys, who go by the names Nine and Twelve, who apparently should not exist and have decided to wake up the world with their heinous plans of death and destruction with their fingers on the trigger.

Terror in Resonance (残響のテロル, Zankyō no Teroru, lit. "Echo's Terror", officially Terror in Tokyo in Japan) is a Japanese anime television series produced by MAPPA. The anime will be directed by Shinichirō Watanabe, with character designs by Kazuto Nakazawa and music by Yoko Kanno. The anime will air on Fuji TV's Noitamina block on July 10, 2014. Funimation has acquired North American streaming rights, while Anime Limited has acquired streaming rights for the UK and Madman Entertainment has acquired rights in Australia. Funimation will premiere the series at Anime Expo on Saturday July 5, 2014.