Oliver goes public with Damien and HIVE, but is unprepared for the consequences. Meanwhile, Malcolm arrives in Star City to help his daughter, and Felicity discovers that Oliver was going to propose to her.

Shadowspire, a rogue military organization with ties to Diggle's time in Afghanistan, launch an attack on the A.R.G.U.S. agents that exposed them years before. Diggle has no choice but to rely on Andy for help. Meanwhile, Felicity confronts a specter from her past while dealing with her new role in Team Arrow.