A mob demands the execution of the corrupted leader, Alan, from fortress guardian Ms. Clifford, hoping it will allow them to return to the surface. Despite pleas from others seeking refuge, Clifford sacrifices his own lifespan to expand the fortress capacity. Alan's secretary, Jane, reveals the hopeful surface video is 30 years old and warns everyone will die if they leave. The crowd, led by Alan's daughter Cindy, accuses Jane of being corrupted and arrests her. To prove the truth, Cindy orders a live-streamed expedition to the surface, forcing everyone to confront the reality outside.