A man and his wife kindly take in an orphaned young man, but a broken bathroom door and the young man's lack of discretion create an undercurrent of tension in the household. As the couple's married life becomes increasingly monotonous, a daring encounter in the living room is secretly witnessed by the young man, unexpectedly igniting a forbidden spark between the three. The man, using the excuse of "helping the young man release his hormones," encourages his wife to approach the young man, and a forbidden relationship quietly begins to develop.