Warning: Do Not Play (Amjeon)

synopsis

An aspiring director Mi-jung struggles to come up with ideas for a new horror film. Even intense bouts of nightmares won't stop her from compulsively reaching out for her laptop every morning. One day, her friend Jun-seo tells her about a mysterious film rumoured to be shot by a ghost. While researching on the film, an idea of writing herself into a horror story emerges. However the more she goes on, strange things starts to take place...