Death Bell 2

“Who will pass the deadly test.”

On the first night of a study camp, the swimming coach is found dead, and a voice tells the students that unless they work out who killed him, they will die one after another. The group is an elite class kept at school to raise their grades and the school's standing. Yoo Sun-dong puts Eun-su (Hwang Jung-eum) and Se-hee (Park Ji-yeon) in the middle of it, two classmates who have to decide whether they can trust each other.