The Witness

Sang Hoon, an average salaryman lives in an apartment complex with his wife and child at the foot of the mountain. One night, he witnesses a crime scene through his living room window, and the criminal also notices that he is being watched. Sang-hoon, despite the dilemma, decides to hide and Ignorance the fact that he had seen someone get tragic ended, but had done nothing. The criminal, however, starts to search theapartment to find and eliminate his only witness of that night.
(Source: KoBiz)