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.
Lee Sun-kyun
Cha Jeong-won
Ju Ji-hoon
Jo Park
Kim Hie-won
Doctor Yang
Moon Sung-keun
Byeong-hak
Ye Su-jeong
Soon-ok
Kim Tae-woo
Jeong Hyeon-baek
Park Hee-von
Sim Mi-ran
Park Ju-hyun
Sim Yoo-ra
