Witness this beautiful yet cruel story that depicts the birth of the Three Dark Sisters and Risa Arisugawa, an ordinary girl who dreams of becoming a singer and was the model used to create Lachesis.

Yumiko, a bored Japanese housewife, visits a swingers' club for some excitement. She meets Bobby, who calls himself the owner and informs her the club is under alien surveillance.There may be more to this swingers' club than a romp with a stranger.