After an epidemic, a quarantine zone is created, dividing the country in two. Three years later, Yeontae and Jinkyu who live in the sane area and have been raised in the fear of the virus and 'the other side', start their military service. But what will happen when they find out what's really going on on the other side ?

a fifteen year old Alex Moon involved in a car crash and called someone who he considered as his hyung although they're not blood related or whatsoever.