First film in Teruo Ishii's Line series.

G-men of Japan fifth installment. A young detective, questioning a double suicide involving his police officer friend and a Turkish girl, travels all the way from Kyushu to Tokyo. Disguising himself as a yakuza member, he intends to root out the underworld's base of operations, weaving together love, guns, and violence to unravel the mystery behind the enigmatic incident and the true nature of evil. This thrilling action drama combines suspense with excitement, depicting a tale filled with love, fists, and firearms.