In a dystopian 2071 devastated by air pollution, the survival of humanity depends on the Black Knights — and they’re far from your average delivery men.
Due to sudden deteriorating weather conditions, visibility on the Airport Bridge is severely impaired, leaving people stranded and at risk of the bridge collapsing due to a series of chain collisions and explosions. Amidst the chaos, the canine subjects "Echo" from the military experiment "Project Silence," who were being transported in secret, break free, and all human survivors become targets of relentless attacks.
A bullied teenager who is locked up at a juvenile detention center due to an unexpected accident, meets a mixed martial arts champion to break through his own limits.
