Midnight Runners (Korean: 청년경찰; Hanja: 靑年警察; RR: Cheongnyeon gyeongchal; lit. Young Cop) is a 2017 South Korean action comedy film directed by Jason Kim and produced by Kim Jae-joong under Movie Rock. The film stars Park Seo-joon and Kang Ha-neul in the lead roles.

Midnight Runners was released on 9 August 2017. An Indian remake titled Saakini Daakini was released on 16 September 2022.^{[3][4][5][6][7][8][9][10]}

Ki-joon and Hee-yeol are best friends and students at the Korean National Police University. One day, on a night out drinking in Gangnam, they witness the kidnapping of a young girl and reports to the Gangnam police station, but the station's Missing Persons Unit prioritizes a high-profile kidnapping of a business mogul's grandson over the case. Knowing they are in the critical hours after a kidnapping, the duo take matters into their own hands.

Through their amateur investigation, Ki-joon and Hee-yeol catch up with the kidnappers, who are running an unfertilized egg harvesting ring and learn that many more girls are locked up at their hideout. Ki-joon and Hee-yeol tries to save them, but are beaten and locked up. After escaping their captors, the duo later return to an empty hideout and a cold trail. As they are only students, their professor Yang Sung-il warns them against pursuing the case or risk facing expulsion.

Unable to wait, they once again embark on their own investigation. With the help of CCTV footage, they track the van to a fertility clinic. They undergo heavy physical training and "borrowed" armor equipments from the University. Ki-joon and Hee-yeol go to the fertility clinic, where they subdues all the enforcers, including their boss Yang-choon. They call the police to arrest the kidnappers despite knowing they will get expelled for their actions.

Due to some of the disciplinary committee members in university as they believed that they had done the right thing morally, Ki-joon and Hee-yeol are instead held back a year in their studies and sentenced to 500 hours of community service, leaving the two satisfied with the outcome. While serving their community service, Yun-Jung visits Ki-joon and Hee-yeol and thanks them for rescuing her.

Midnight Runners marks Park Seo-joon's first time playing a lead role in a film.^[11]

Midnight Runners was sold to six countries at the Hong Kong International Film & TV Market. The rights to the film have been purchased by companies including Japan's The Klockworx, Taiwan's Long Shong, Hong Kong's Deltamac HK, Philippines' Viva Comm and Singapore's Purple Plan.^[16]

Filming began on 21 November 2016 in Yongin, Gyeonggi Province, South Korea and ended on 23 February 2017.^[17][18]