Closed School (2019)

Plot

Haunted by disturbing nightmares, Yoo-ra reunites with her high school friends: Jin-tae, an aspiring artist; In-seok, a wealthy former thug; Hye-jin, who has feelings for In-seok; and Seong-ho, once In-seok's helper. During their gathering, Yoo-ra brings up a classmate's tragic suicide, prompting discomfort among the group as they deny remembering her. After a disorienting encounter with her reflection, Yoo-ra collapses. Following a car accident while trying to take her home, the friends awaken in their long-abandoned school, confronting the dark secrets from their past.