A commuter train's passengers are jolted awake by an earthquake alert on their phones, leading to chaos as the lights flicker and the train lurches. When they regain their bearings, they discover the train has emerged from a tunnel into a mysterious, overgrown landscape. Opening the doors reveals that the tracks abruptly stop, leaving them in an unknown wilderness. Reactions among the group range from bewilderment and fear to apathy. The passengers must grapple with their new reality, questioning their location and whether they can endure the challenges of their unforeseen environment.