His lust grows stronger with each passing day... Junzo Komori believes that this is proof of his existence, but considering his age, he hides it. The object of his lust is his son's wife, Misako, with whom he lives. This wife and son are lovers who get caught up in each other's company at every opportunity, but due to an unexpected turn of events, Minoru, the son, is forced to stay in bed. The family is suddenly hit by a financial crisis. What will Misako choose to do now that she has lost her breadwinner?