Derailed (2016)

Jin-Il (Minho) and Ga-Young (Da-Eun) are teen runaways. They stay with other runaway kids and work part-time jobs. Sometimes, they resort to stealing to survive. They are now out of money, but scheme to get some money. They lure Hyung-Suk (Ma Dong-Seok) to a motel. Their scheme soon goes awry, with Ga-Young becoming a hostage.