Tsutomu, a dull freelancer, works as a security guard at the "Manpinko Hibokan" (hidden treasure museum), which is about to close, but it is a museum where mannequins move around late at night as if they were alive! Because it is a treasure house, it was originally full of erotic whores! They come with vibrators and rotors that they have never seen before! They manage their ejaculation with a super erotic succubus blowjob! The mannequins are going to take a stand to prevent the closing of the museum!