Lee Doo Yong was highly regarded as the korean foremost action-director and this is possibly his most famous film in Occident. It was made in the wake of the Kung-Fu craze started by Bruce Lee and, of course, story incorporates as many as possible elements from Hong Kong formula. Real (and very tall!) Taekwando black-belt Charles Han Yong Cheol plays an ex-wealthy boy gone alcoholic and homeless for several troubles: his father kicked him out cuz he's in love with the sister of a revolutionary guy, and even the girl repudiated him, after he unknowingly killed her brother. Only after learning her ex-fiancee was enslaved by an evil japanese invader (actor Bae su Cheon), the alcoholic stops to be alcoholic in order to back with a vengeance, eventually allying with a manchurian secret agent and a repentd mercenary killer. The main interest of this production resides in the fact it's Korean, so the Taekwando is the real star here. In a very impressive scene reminescent of Sergio Leone's Spaghetti westerns, the former-alcoholic get off the train and fights all the way a long bridge filled by dozens of fighters. Among them, future martial arts legend Wong Cheng-Li (aka Hwang Jang Lee) with no moustaches yet. A cult in his own way, this has so many titles (seven at least, including One-way bridge, Bridge of death, Left wrath of fury, Korean connection etc.) but it's always the same production. A Korean extravaganza known in Italy as Billy Chang. The main star made a dozen of movies, then quit and opened a martial gym in USA.