In situations where there is no way to resist or escape, people lose their voices, and their bodies become immobile.
In this game, the viewer operates a controller to move the 3DCG character's body,
but if the character is harmed, the operation is disabled, and the character becomes unable to move.
Day after day, they have to ride a crowded train, and thier bodies are put in jeopardy.
It is indeed as if playing the same game over and over again.
At the end of the story, they attempt to peel off their touched skin and molt.