In a confined space measuring 120cm in height and 140cm in depth, rising star and quintessential loli-type 'Maru Yamamoto' is subjected to strict rules and severe restrictions. Unable to move her body freely—forced to either stand or lie down continuously—with only the white wall marking the passage of time, she can obtain water and food solely by obeying commands. As harsh experiments are further imposed, the film captures the girl's physical and psychological responses. Within this limited space, the limits of her endurance are put to the test.