“Extraordinary Mission” is a fresh Chinese action thriller helmed by directors Alan Mak, known for “Infernal Affairs,” and Anthony Pun. The storyline follows an undercover cop as he infiltrates a drug trafficking ring to dismantle it from within. The film features performances by Huang Xuan, Duan Yihong, Lang Yueting, Zu Feng, Xing Jia-Dong, and David Wang.