Su-hee (Kim Shi-eun) is a high school student who is focused on vocational training education. Hoping to find a good job, Su-hee begins vocational training at a sorting call center, but she faces tremendous pressure from a greedy company. The high school student is too much to bear this situation, which eventually leads to her death. Detective Oh Yoo-jin (Bae Doona), who has something in common with Su-hee, is in charge of the case. She begins to pursue the cause of Su-hee's death. The film will serve as the closing film of the 61st Critics' Week in the parallel section of the 75th Cannes Film Festival.