In the unique setting of the Direct-Pressure Women’s Restroom, a sister and a monk unexpectedly meet. They immediately begin proselytizing to each other, but their teachings are completely incompatible. However, the monk's remark—"this place is my training ground"—leads the sister down an unexpected path. Gradually, the situation unfolds: the sister is made to eat feces and ultimately reaches the extreme act of drinking the monk's urine. Through this process, what begins to grow between them is "love." An unusual missionary drama woven from a strange environment and an odd pairing of characters.