When the police refuse to investigate their daughter’s alleged suicide, two computer-illiterate parents decide to design a protest banner. Based on the infamous Miryang case in South Korea which shocked the nation in 2004 and continues to fuel public outrage even today.
Min-jae, a rookie police officer with a natural born talent for driving, is assigned to the perfect team: the Hit-and-Run Squad. But at the same time, for police detective Si-yeon, it is a place she is unjustly demoted to for doing her job. The two team up to arrest the rich and powerful speed maniac Jae-chul who is suspected of committing crimes for his obsession for speed.
Based on the Resurrected Victims Phenomenon where murder victims come back to life to avenge the murderer, a prosecutor is suspected of his mother’s murder.
To nab a sales manager who's at large after murdering his family, a detective investigates the man's colleagues, who seem to be hiding something.
The children are busy. The daughter has got divorced and is now taking care of her autistic son. The oldest son has lost his job and is busy finding another job. The youngest son doesn't have a decent job but manages to get by through driving a delivery truck and working as a chauffeur. Their parents don't blame their children for not calling or visiting on their mother's birthday.