Makoto and his wife Yui have been married for three years, but recently their relationship has not been satisfactory. Makoto is often away on business trips, and he often loses his erection before he can. Makoto is overcome with guilt. Yui has become so conscious of being a faithful wife that she has become a complete recluse. Worried about this, Makoto gets Yui to attend a cooking class that she has always wanted to go to, but...