Recently hired as a lounge bartender, an American expatriate is unceremoniously thrust into the no-holds-barred criminal underworld of Japan when he discovers that the residential hotel he works in is controlled by a major crime syndicate. Now moonlighting as a Yakuza enforcer, the expatriate must deal with violent lieutenants, manipulative allies, corrupt officials and seductive women all while trying to solve the murder of an old acquaintance.

What Lucius Paisley said. The logline is about the plot, the front story, not the backstory, and plot commences begins when he starts moonlighting as a Yakuza enforcer.

Everything before "... moonlighting as a Yakuza enforcer..." needs to be f**ked off...

That's where your story starts.

I am wondering if the logline needs to address why he is an expatriate. Why would he want to become an enforcer? Are they responsable for the friends death? Is he trying to take the organization down from within? I'm just trying to understand what one has to do with the other.