Shinjuku Incident

Jackie Chan portrays Steelhead, a tractor repairman from China who enters Japan illegally in search of his girlfriend.

Naoto Takenaka plays Inspector Kitano, a dedicated Tokyo detective dealing with the city's escalating crime.

Daniel Wu is Jie, a close friend of Steelhead who helps him navigate the challenges of their new life in Japan.

Xu Jinglei appears as Xiu Xiu / Yuko Eguchi, Steelhead's long-lost love, who has built a new life in Japan.

Masaya Kato takes on the role of Toshinari Eguchi, a powerful yakuza boss with whom Steelhead forms an alliance.

Tōru Minegishi plays Koichi Muranishi, an acquaintance of Steelhead who gets involved in the criminal activities.

Jack Kao portrays Gao Jie, a gang leader in the Chinese immigrant community of Shinjuku.

Yasuaki Kurata is Taro Watagawa, a prominent yakuza member intersecting with the protagonists' lives.

Fan Bingbing plays Lily, a bar hostess and romantic interest to one of Steelhead's close friends.

Chin Ka-Lok appears as Hong Kong Boy, a member of the Chinese immigrant gang in Shinjuku.

Ken Lo plays Little Tai, an underling in the Chinese gang that Steelhead becomes a part of.

Lam Suet depicts Old Ghost, an associate of Steelhead within the criminal underworld of Tokyo.