Satoshi, a younger brother who lives with his older brother and his wife, has a daily routine of taking secret photos of his sister-in-law An. Cameras installed in radio-controlled cars and stuffed toys are targeting An's daily life. One day, Satoshi witnesses An meeting up with a male friend, and threatens to take a photo of them and show An to his brother. Then, under the same roof with his brother away, Satoshi follows his other fetish of taking photos of An's underboobs and plump ass from a low angle, humiliating her...