Anyone knows the movie "Buried"? Or did you see "D-Day"? Well, this one is not exactly the same but there are many similarities in the basic concept. It's about a man who gets trapped in a collapsed tunnel. Luckily, his phone gets a signal, so he can make an emergency call. Otherwise any help would have taken some time since the tunnel itself was a new construction and didn't have much traffic yet. The overall meaning of this movie doesn't seem to be his struggle to survive until rescue arrives. It rather displays that so many things can actually go wrong, and what the public and single individuals are thinking about the whole incident as times passes. And although I got angry so many times while watching, many things got closer to reality than we would admit. Secret thoughts versus proper behavior versus taking action through the back door. How would one really behave when facing an extreme situation - being a victim, a bystander, a culprit or a person in charge. Who's protecting his interests and who's protecting his conscience? The movie wasn't perfect. Most of it was gripping but it still had its longueurs. Maybe... if they had reduced some of those parts that made me angry throughout the movie...? Wouldn't have done any damage. The acting was really good. I'm only starting to appreciate Ha Jeong Woo's acting but I'm already quite impressed with what I've seen so far. There were so many characters that most of them couldn't show any depth and many of them felt like silhouettes and ghosts. But those few who got more screen time were good in delivering the message. Korean filmmakers have a knack for disaster movies - though in their own way, but they hardly disappoint.