Team Arrow attempts to work with the Star City Police Department but much to Oliver’s frustration, things don’t go as planned. Meanwhile, Dinah gets some life-changing news.

When they learn of an upcoming attack on the city, Team Arrow calls Roy Harper to help them stop the Ninth Circle. However, things go awry and there is massive collateral damage. As Captain of the SCPD, Dinah investigates what happened in an episode that takes on a true crime narrative and tone.

Oliver finds himself in a precarious position. SCPD shows up with a warrant for Felicity.

The battle between Oliver and Emiko comes to a boiling point which brings back some familiar faces and leaves others in dire jeopardy.