I write this review as a WARNING.
This movie is REALISTIC and STARTLING!
I had to LOOK AWAY!
It's WAY too similar to the events at the World Trade Center on 9-11!
It was on Netflix, so I watched and could hardly sleep after.
On Christmas Eve, at the luxurious Tower Sky twin tower building in central Seoul, residents and staff members busy themselves with Christmas preparation. Helicopters are hired to circle the building and spray the building with man made snow during the Christmas party.
Residents' amazement soon turns into terror when a helicopter loses control and crashes into the building, setting off a chain off horrifying events that threatens the lives of all the residents.