The Elder Son (1975)

Two students are late for the last commuter train and have to spend a night in a strange town They rack their brains about where to find shelter and quite by chance they overhear a talk between father and son The son is an adolescent who is head over heels in love with a girl several years his senior He is living through the first drama of his life though his love is just puppy love Then being resourceful fellows they think of a plan to pass one of them for the elder son of this family The reason they give for his unexpected arrival is that he is a child of the fathers longforsaken love They presume this cockandbull story will come off and right they are