Although her husband loves her, Nana feels unfulfilled and in search of that something, she has an affair with a man named Sasagi. They always meet at night... Nana is fed up with this uncertain relationship, but one day Sasagi goes on a business trip to the countryside and Nana is ordered to accompany him. At a resort with a view of the sea, Sasagi and Nana have sex without any regard for the public. However, Nana soon finds out Sasagi's true intentions for this business trip. She is told to participate in a business meeting disguised as Sasagi's secretary...