Complete story — includes the ending
Darhk begins taking control of the world's nuclear missiles. The team seeks out Noah to help disable Rubicon. Darhk sends Danny Brickwell and Amar to find and kill Noah, but Oliver and his team are able to rescue him. Noah agrees to help, but it requires a high-powered processor from Palmer Tech. Felicity learns she has been fired as CEO and is unable to get the processor, forcing the team to break in and steal it. H.I.V.E. locates the team when Noah hacks into Rubicon. As H.I.V.E. attacks, Felicity and Noah shut down Rubicon and stop all the missiles but one, which launches and heads to Monument Point. Felicity only manages to redirect it to Havenrock, reducing the casualties to tens of thousands. Oliver and Diggle find Darhk in the Star City nexus chamber, gathering more power from all the deaths caused by the explosion. Meanwhile, in the underground city, Malcolm tells Thea it is designed to protect Darhk and his chosen people from the nuclear apocalypse. Machin attacks the city and kills Alex. In flashbacks, Reiter escapes the cave-in, but Oliver and Taiana steal the idol back. The idol then begins to affect Taiana.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 4. HTML formatting and reference markers removed. · Content license