"In a tense underground bunker, a compassionate nurse and a former military officer lead a group of strangers in a desperate search for the source of unexplained disturbances, only to discover that the real threat comes from within their own ranks."
Protagonist: A compassionate nurse who strives to keep everyone calm and united in the face of danger; Deuteragonist: A former military officer who takes charge of the group's security and protection.
A series of unexplained, ominous noises and disturbances within the bunker, causing the group to question if they are truly alone and safe, and leading to a desperate search for the source of the disturbances.
As the group finally discovers the source of the disturbances, they realize that they are not alone in the bunker. With the help of the nurse and the former military officer, they manage to outsmart the intruder and escape to safety. The experience brings the group closer together, and they emerge stronger and more united than ever before.
Twist: The intruder turns out to be a member of the group who had been secretly causing the disturbances in a desperate attempt to get the others to leave the bunker and find help. The group must now confront the betrayal and decide whether to forgive or punish their fellow survivor.