Natsuki was not clever but a cheerful girl who lives in a rural village. Her parents work away from home, so her classmates and other villagers have been warmly watching over her. She went to see her parents in the city when her summer vacation started. And when she went back to the village, she was totally grown up! Seeing her body was sexually mature, villagers' warm feelings towards her changed; their male instinct was turned on. Thus started a naughty and fun vacation of Natsuki who is still naive about sex...