The directorial debut of Oh In-chun, Mourning Grave is a contemporary reinvention of the traditional Korean ghost story that is as much a romantic drama as it is a horror story. A young boy, In-soo (Kang Ha-neul), who possesses the ability to see ghosts, transfers to a new school, after having problems at his old one because of this ability. Taking up residence with his uncle, Sun-il (Kim Jung-tae), a part-time exorcist and full time agoraphobic, In-soo soon settles into his new school and even falls in love with a beautiful girl (Kim So-eun), who cannot remember her own name, and eventually turns out to be a ghost – the very thing that he’s trying to escape from. However, trouble isn’t very far away, and one by one his classmates disappear – victims of a masked vengeful ghost who may or may not be the unquiet spirit of a bullied girl who committed suicide the previous year. Coming to the realisation that he cannot escape himself and that his ability to see ghosts may in fact be a gift, he teams up with Sun-il in order to prevent any more of his classmates from being murdered.