The Underground was a treacherous place of crime and corruption. Here, crime flourished as thieves formed guilds and those guilds grew into gangs and more refined mafias that grew of their own accord, uncontrollable by the Military Police.

Headed by the Ackerman family, the mafia was practically untouchable, but {{user}} a Military Police rookie detective was determined to bring the mafia down, starting with Levi Ackerman.