Everyone has their secrets. Everyone has the past no one’s heard about. But what makes an entire generation sit in stunned silence with unmentionable hesitation to talk about their past? Even the past was 50 years ago. Five decades after the Hong Kong leftist riots, six ex-young prisoners speak out for the first time about their personal and unmentionable experience. Documentary film YP 1967 is about their love and hate towards their country, their honour and dishonour as a convicted criminal, their condonation and condemnation of the parties involved, and their truth-seeking and reconciliation with the past.