While the father is away on business, the mother and son make a forbidden mistake. They promised to keep this a secret between the two of them, and to return to their normal mother-son relationship after the father returns home... When the husband's business trip finally ends and the three of them start living together as a family, the mother and son suddenly experience withdrawal symptoms... The two of them have too good a physical compatibility to be called mother and son!! The situation of not being able to have sex with their best partner in close proximity gradually drives them into a corner, and they start to have intense sex often, hiding from the husband's eyes...