Sara Nikaido, daughter of the CEO of the world-renowned NIKA Corp., dislikes her new butler's attitude, and the way he carries himself as if he's always making fun of her. One day, there's a traffic jam on her way to an important party, and she has to take a train. There, inside the crowded car, she gets molested. Losing herself to urges she's never felt in her life, the inexperienced young lady finds herself unable to resist. As the molester places vibrators on her nipples and even inside her butt while teasing her most sensitive areas, she tries to hold in her moans. And just with that, she's brought on the verge of desperately coming in front of everyone. And yet, she somehow feels like she's heard that molester's voice somewhere before...