takashi sorimachi play asias top assassin o he quiet and regretful of his lifestyle but always get the job do and be effecient . andy lau be the rival assassin tok who be come up through the rank and challenge o for the title of number 1 assassin . tok be the reverse of o hungry for attention and enjoy his job smile and laugh and reference movie through out the film . caught between the two be os house cleaner chin ( kelly lin ) and interpol agent lee ( simon yam ) . chin and o be attract to each other but all the time theyve know each other they have do nothing about it . then tok meet chin in the video store she work in at night and they develop a relationship of there own create a love triangle . johnny to have create a great entertaining film in the john woo and ringo lam heroic bloodshed style . the performance be all good especially the two main lead who be great in there role bring coolness to the screen whenever there present but i feel simon yam and kelly lins character werent develop as much a i would of like . the end be also slighlty disapointing take the attention of the film away from the assassin to simon yam . as far a realism be concern dont expect much but you shouldnt with a film like this . overall the film be really entertaining feature some great action shootout .