神尾マイ(山下美月)の計画通り、女子高生モデルの朝川由那(武田玲奈)と付き合った叶野健人(萩原利久)。
二人の交際が順調に進むかと思いきや、由那は学校の教師・松井（岡田義徳）から、健人が従姉妹と言っていたマイは、実は“ビデオガール”という危険な存在だと知らされ、不信感が募る。
そんな中、二回目のデートで健人の家を訪れた由那は、マイのビデオテープを発見してしまい…。そして、マイは忽然と姿を消してしまう。
As per Kamio Mai's (Yamashita Mizuki) plan, Kanono Kento (Hagiwara Riku) started dating high school model Asakawa Yuna (Takeda Rena). Just when it seemed like their relationship was going smoothly, Yuna learns from Matsui (Okada Yoshinori), a teacher at his school, that Mai, whom Kento said was his cousin, is actually a dangerous "video girl," and her distrust grows. Meanwhile, when Yuna visits Kento's house on their second date, she discovers a videotape of Mai... And then Mai suddenly disappears.
