A Hard Day 2014 Detective Go Geon soo is having a hard day, and the following events happen to him in less than 24 hours He receives a divorce notice from his wife His mother passes away He and his coworkers are investigated by police inspectors over alleged embezzlement Then on his way to his mothers funeral, he drives recklessly and commits a fatal hit and run He tries to cover up the accident by hiding the mans corpse in his deceased mothers coffin But someone has been watching all along, and Geon soo gets a mysterious call from a person claiming that he was the sole witness to the crime, who now begins to threaten him