剧情介绍：

After a long day, a bunch of exhausted travelers have boarded the final train to head home, looking forward to getting some rest in their own beds. But things take a turn when their train unexpectedly derails and smashes into a deserted tunnel. The trio left standing; reserved mom Yi Ling, her son Lucas, and college student Janice, must stick together to make it through the night, while also evading a mysterious creature on the prowl. Yi Ling is haunted by memories of a car crash that claimed her husband's life and nearly took Lucas with it. When the monster snatches Lucas away, her motherly instincts are put to the test, and Janice is forced to confront her own notions of family as she reflects on her strained relationship with her father. Meanwhile, at the subway control center, the engineers work tirelessly to understand the situation and rescue the survivors.