In a sealed fortress where humanity has survived for decades, a group receives news that a woman named Donna has found a perfect lakeside location for a new base, sparking hope for a long-awaited exodus to the surface. Amid this optimism, others remain focused on a prisoner named Alan, whose trial is concluding. They express contempt, arguing his crimes are already clear and that a public vote will determine his execution method, dismissing the trial as a waste of time.