This is Oshima's post-1968 analysis of the failure and disillusionment of the student Left, and it's among his most biting and cautionary films. Like Death by Hanging and other movies, it starts with a riddle (the real or imaginary disappearance of a student militant), and then follows through all the implications with a remorseless logic. Another student sets out to trace the missing boy, fearing that he committed suicide; his only leads are conversations with the militant's estranged girlfriend and a roll of film shot by the boy just before he vanished. But it's less a mystery thriller than a series of provocative questions. What is militancy? Does 'struggle' mean violence? Is it really possible for an individual to identify with the interests of a group? And what part do sexual problems play in determining the feelings and actions of young people?