Seeking an escape from his mundane school life, Keita plans to run away to meet an old friend. But a rogue construction machine and a walking cellphone quickly put an end to that scheme...

Keita's aloof personality quickly puts him at odds with Seven. A mysterious signal leads UNDER ANCHOR closer to locating the rogue Zero One.

Numerous cases are being reported of spontaneous violent outbursts across Tokyo. When Zero One's involvement is discovered, Keita is paired up with senior agent Kirahara and his Phone Braver, Third, to find the culprit.