Ding Hui is a member of Purple Butterfly, a powerful resistance group in Japanese occupied Shanghai. An unexpected encounter reunites her with Itami, an ex-lover and officer with a secret police unit tasked with dismantling Purple Butterfly.

• Shanghai Film Studio
• Lou Yi
• Zhang Ziyi
• Liu Ye
• Feng Yuanzheng
• Toru Nakamura
• Li Bingbing
• Kin Ei
• Leni Lan
• Yao Anlian