Vanessa and Susan are chased by mutated feral vampires in the sewers, arriving back at the hospital only after a hostile takeover.

Axel leads the surviving members of their group towards his old military base for shelter but finds it abandoned and in disrepair. With vampires closing in all around them, Axel decides they need a safer refuge and decides to go underground. Separated from Vanessa and the group, Mohamad tries to catch up while navigating hostile territory.