A film from Knights under the Mask Collection series, this work carefully depicts a girl trying on commercially available masks, checking various aspects such as texture and breathability. Close-up shots highlight her expressions and appearance while wearing the mask, emphasizing a unique charm different from everyday looks. At one point, a man suddenly appears and forcefully covers the girl's mouth through the mask. The focus remains entirely on the girl in mask-wearing scenes, with no nudity or physical interactions. Filmed completely in clothes, she wears everyday office lady-style outfits, creating a realistic atmosphere. Frequent upskirt shots are included, making for an engaging viewing experience.