Takeshi comes to visit his relatives during summer vacation. His goal is to meet his aunt Chisato, who he has always admired for her kindness, but he witnesses her making love with his uncle. Even though he knows it's her fault, his jealousy and feelings of unease grow stronger. He approaches Chisato, but she rejects him. Feeling down, Takeshi heads off to go home, but then Chisato tenderly kisses him...