A father and daughter are invited into a closed room, promising to take a sex education survey in which they can win gift certificates. While they are alone watching adult videos, the daughter's crotch is wet and the father's crotch is bulging. They start touching their crotches unnoticed. When their eyes meet, it's an awkward atmosphere. But they are curious about each other's crotches, and the father and daughter finally cross the line... Five pairs of secrets that are kept secret from their mothers are included!