Knights vs. Ninjas

Knight vs. Ninjas is an American neo-noir action film about a private war between a secret order of knights and a clan of ninjas in modern times.

Plot summary
''In ancient Japan, farmers had to fight back against their samurai oppressors. They have perfected the art of combine and stealth. These farmers became the first ninja. But during the Japan–United Kingdom relations, a ninja clan had clashed with a secret order of English knights. Their rivalry has gone on throughout the centuries to this very day. During an investigation, an FBI agent will get pulled into their private war.''