PETRA & PETER is a documentary drama about consequences of both alcoholism and adoption for two very different siblings. They are grown up and now living separate lives. But they have one thing in common - they both want life to be something else. PETRA & PETER is a documentary drama about consequences of both alcoholism and adoption for two very different siblings. They are grown up and now living separate lives. But they have one thing in common - they both want life to be something else. PETRA & PETER is a documentary drama about consequences of both alcoholism and adoption for two very different siblings. They are grown up and now living separate lives. But they have one thing in common - they both want life to be something else. PETRA & PETER is a documentary drama about consequences of both alcoholism and adoption for two very different siblings. They are grown up and now living separate lives. But they have one thing in common - they both want life to be something else.