Part 5/8:
The plot thickens as the conductor and various passengers attempt to communicate with the outside world, only to discover that the situation is worsening nationwide. A state of emergency is in effect. The isolation felt by characters becomes palpable, and self-preservation instincts clash with the instinct to help fellow survivors.
A pivotal moment occurs when Seok-woo receives a call from his assistant, highlighting the corporate world's negligence and adding to the themes of accountability and personal responsibility. As the group becomes increasingly isolated, they are forced to confront their own prejudices and fears, exemplified by characters like Yon-suk, who tries to protect himself at the expense of others.