Zhang Ziyi is a young Chinese woman in love with Itami (Toru Nakamura), a Japanese man about to be sent home for military service. Devastated, she moves back to Shanghai only to witness the death of her older brother during an attack by the Japanese extreme right. She changes her name to Ding Hui and joins a secret resistance group code-named Purple Butterfly... The same group that, years later, will plot to assassinate her lover. DVD features include 5.1 surround sound, theatrical trailer, previews, and web links.