After dropping out of college, I temporarily return home from Tokyo. I plan to head back a week later and start working at a friend's part-time job, but my mother first asks me to take a watermelon to the Mizuno family, who have just moved in next door. There I find Yuka exposing herself carelessly in a kiddie pool. I am unsettled by the easy intimacy of country life, but Yuka closes in with a sultry air. Overcome by the summer heat, I let myself be swept along and accept her kiss...