年少輕狂或許不知地厚天高，然而，世故老練亦不見得有多好。援交少女被捕，顧客中任律師的教她利用制度盲點，在感化官面前上演一幕「改過自新」的戲碼，留個好印象，以博取輕判，避過入獄。她對感化官說盡謊言，也許是為了蒙混過關，也許不……少女的荒唐經歷，是對那教人嘔吐窒息的成人世界的控訴。《藍天白雲》女主角梁雍婷，化身茫然迷失且內心脆弱的援交少女，為當今年輕一代吐一口悶氣。

Young Sung Neng Yee, who is brought as part of a wealthy Chinese family. She is eager to become part of Mao Tze Tung's "new society", but soon becomes disenchanted by the economic misery the changes bring to her family. Before long, the authorities become aware of Neng Yee's feelings and she is taken to a labour camp, overseen by the sadistic Colonel Cheng.