 In a pre-WWII Tokyo, the professor of German Hyakken Uchida (Tatsuo Matsumura) decides to retire after thirty years of professorship, and dedicate to the career of writer. His students, some of them from different generations, love him and keep a close touch with the professor and his wife (Kyôko Kagawa) along his life. In 1943, the house of the professor is bombed, he loses all his possessions and moves to a simple gardener cottage. After the war, his former students build a new small house with a lake around, and every year along seventeen years, in the professor s birthday, they have a reunion with a funny ceremony, based on children s hide and seek and referring if the professor is ready to die. They ask the professor: "-Mahda-kai?" ("Are you ready?"), and the professor responds "-Madadayo!" ("Not yet?") and drinks a large glass of beer.