A huge creature emerges from the Han River and begins attacking people. Gang-du tries to grab his daughter from the crowd and run, but he realizes he has grabbed the wrong person’s hand and sees the creature snatching away Hyun-seo and diving back into the river. After a mass funeral for the victims, government representatives and the American military arrive and quarantine people who had contact with the creature, including Gang-du and his family. It is announced that the creature is the host of a deadly, unknown virus