The ‘Beast Cop’ Ma Seok-do heads to a foreign country to extradite a suspect, but soon after his arrival, he discovers additional murder cases and hears about a vicious killer who has been committing crimes against tourists for several years.

"I deliver everything that the post office service does not handle." Eun-ha, who is a normal junkyard employee, secretly works as a delivery clerk that deals with unusual delivery requests.

Hong Ji Ah is an exorcist who gets rid of unrested spirits to sell houses. Oh In Beom is a fake exorcist who calls himself a doctor of the paranormal to scam people. They serendipitously run into each other one day.

A modern-day Korean emperor passes through a mysterious portal and into a parallel world, where he encounters a feisty police detective.

After barely surviving a violent attack by an elusive serial killer, crime boss Jang Dong-su finds himself forming an unlikely partnership with local detective Jung Tae-seok to catch the sadistic killer simply known as "K".

Ma Seok-do works as a detective squad chief. His team struggles to bust a criminal ring who originally came from Yanbian, China and led by Jang Chen.