While their father is away, a brother and sister live their daily lives. The aroused brother attempts to play a prank on his younger sister, but she wakes up from her sleep. The sister turns away, trying to escape, when the brother whispers behind her, "Big brother... it's okay." Those words become the trigger that crosses the line. Like a dam breaking, the two begin passionately craving each other's bodies. To his devoted little sister, the brother whispers the devil's words: "You want to be fucked by all sorts of guys, don't you?" Those words lead to a betrayal—gang rape. An explosive storyline of 20 consecutive creampie scenes awaits.