Sipping hot honey! In a violent whirlpool, sisters are drowned and ravaged…

Kumiko Hayakawa and Keiko, whose parents had died three years earlier, lived together, cuddled up to each other. One day, when they arrived at a corner of a multi-tenant building, Keiko disappeared to buy sanitary products, and Kumiko got on the elevator alone. At that moment, three men entered the elevator as it was closing. A strange atmosphere prevailed. An unbelievable scene unfolded...