As Yurie, a housewife, hangs laundry out on the balcony one day, a strange worm like creature wriggles its way inside her cloth and straight into her vagina!The man next door says it's his pet and that it escaped, but when he comes to retrieve it, Yurie is too embarrassed to tell him it's inside her.After he leaves, the thing in her vagina duplicates and leaves her writhing in bed.The creature feeds off women's sexual fluid and multiplies.There is only one way to get the tentacle out of a vagina... and that's to drench it in a man's semen!Yurie is afraid of her strict, serious husband, so instead she turns to the man next door and begs him to cum inside her to get rid of the tentacle...!