Kokoro and Ken are childhood friends. In front of their parents, they act like they don't like each other at all, but in reality, they love each other deeply. Just then, both sets of parents decide to go on a neighborhood association trip. Kokoro and Ken, who were left behind, start craving each other as soon as their parents leave. The pent-up feelings and sexual desires that they had been suppressing in front of their parents explode, leading to intense sex that escalates into unprotected intercourse.
