7 Gwanggu (tt1934381): Hae Joon, a member of a small and interconnected team on a drilling rig platform in the south of Jeju Island, works as an equipment supervisor. Jung Man, a former colleague of Hae Joon's late father, is appointed as the captain of the new underwater exploration vessel, Eclipse. Although Hae Joon's intention is to observe the platform and leave, Jung Man suggests one last drilling. After three weeks of preparation, Hae Joon and his teammate dive into the water to repair a part of the platform. However, a problem arises in the team and Hae Joon's colleague gets trapped in a void. When Hae Joon returns to the platform, he discovers that his other team members are dying in strange ways. They soon learn that a creature living underwater is coming up to the platform and feeding on the team members. (800 characters)