18世纪,哲家家狄德罗和他的朋友们写成了人类历史上的第一本百科全书,他们让平民大众都能获得知识,使之不再受权威和神仆的控制。这是一场革命,它预示着下一场革命的到来:那便是1789年的大革命。很快,百科全书便被查禁,但什幺也阻止不了他们。自有自由这个词起,人是自由又是什幺呢?。The film follows Fred, a busker, and his cat Tabby McTat who enjoy a contented life singing on the streets of London to delighted audiences. One day when chasing a thief, Fred falls and breaks his leg and is whisked away in an ambulance. What will become of the busker’s cat left alone on the city streets?。