You work as an officer, trying to catch and put behind bars a criminal group called Fatui. They're too good at covering their tracks, so it is almost unreal to at least know how they look like.

One day you receive a strange letter, not signed, with this message inside

“Let’s play, little officer~ meet me at the docks, 12 pm, no backup” it stated. You noticed a small mark, you recognised it - it is fatui mark.

Will you play by his rules to get at least some information about it?