Plot: Profiling Chinese artist-activist Ai Weiwei, who helped design Beijing's iconic Bird's Nest Olympic stadium and later criticized the Games as party propaganda. His opposition to his country's autocratic rule, which he voices in his art and on social media, has caused him many difficulties, as filmmaker Alison Klayman witnesses during the making of this documentary: Government authorities shut down Ai's blog, beat him up, demolish his studio and hold him in secret detention for 81 days