The terrible variation virus that suddenly hit Seoul one day! Yeon-u, who has been on a school trip to Seoul, is so singing about the... more>> idea that he can get acquainted with the same class soyon, who was usually unrequited love. Unidentified cells appeared in front of The Yeonwoo-ne Class while sightseeing in Seoul. The math trips of classmates like the actors turn into hell because of the cells that turn the infected into a ferocious figure when they come into contact…! Can Yeon-so escape Seoul safely? <<less