Arrowverse: Internal Warfare

Synopsis
In the 6 part crossover event a new supervillian team takes up the mantle of The Legion of Doom so Green Arrow, The Flash and The Legends come together to take on The Legion. After the first enagagement between them causes massive collateral damage the new director of ARGUS, Rick Flagg brings forward an order for all vigilanties and powered heroes to come forward and be evaluated by the organisation where they will decide whether or not the heroes may continue there activities. This divides the heroes with many, including Oliver, refusing to come forward. This puts him in direct confrontation with Barry and his allies who agree with the act. With The Legion of Doom still at large and our heroes divided this is an event that will shape the world forever and Leave its scars on everyone involeved.

For Registration:
Grant Gustin As Barry Allen/The Flash

Carlos Valdes As Cisco Ramon/Vibe

Caity Lotz as Sara Lance/White Canary

Brandon Routh as Ray Palmer/The Atom

Echo Kullem as Curtis Holt/Mr Terrific

Nick Zano as Nate Haywood/Citizen Steel

Against Registration:
Stephen Amell as Oliver Queen/Green Arrow

David Ramsey as John Diggle/Spartan

Dominic Purcell as Mick Rory/Heatwave

Megalyn Echikunwoke as Mari McCabe/Vixen

Franz Drameh as Jefferson Jackson/Firestorm

Victor Garber as Martin Stein/Firestorm

Tech Support:
Emily Bett Rickards as Felecity Smoak/Overwatch

Tom Cavanagh as Harrison "H.R" Wells

Audrey Marie Anderson as Lyla Michaels

Legion of Doom:
Liam McIntyre as Mark Mardon/Weather Wizard

Danielle Panabaker as Caitlin Snow/Killer Frost

Katie Cassidy as Laurel Lance/Black Siren

Manu Bennet as Slade Wilson/Deathstroke

Nick E. Tarabay as Digger Harkness/Captain Boomerang

Simon Merrells as Dr Simon Jones/Psimon

Todd Lasanse as Edward Clariss/The Rival

Part I: Behind The Mask
The episode opens on Lian Yu where Slade Wilson sits in his cells, suddenly he hears gusts of wind and screaming guards he is shocked when a mysterious figure phases through the door and introduces himself as The Rival he takes him and fellow prisoner Digger Harkness outside to a team of villains where he offers then a place on the team.

It cuts to Team Arrow on a mission in Star City against arms dealers, but ARGUS agents burst in lead by Lyla Michaels and tells them that the director needs to speak to them. Oliver and Diggle are shown the feed from the prison by ARGUS director Rick Flagg. Oliver is shocked and realises that he needs to go after Slade and The Rival. Flagg reluctantly agrees but only on the condition that a team of agents accompany them. Oliver contacts Team Flash and The Legends who all agree to help in the fight.

Cisco vibes Deathstrokes mask to a warehouse in an undisclosed location, while a decryption algorithm looks for possible locations the heroes take the time to catch up and socialise where Oliver admits his gratitude for there help but also his fear in going up against his most dangerous enemy. Barry lightens the mood by quoting Oliver from his rough training sessions.

The algotithm soon finds a location in Markovia and the team heads out to take on the team on The Waverider. Realising it is a public area ARGUS advises caution to which they agree. Oliver and Barry enter first while the Legends wait outside to cover the perimeter. Oliver points an arrow at Slades head and commands him to surrender. Slade does this and causes suspicion from Barry, it then cuts to outside where Black Siren uses her powers to attack the legends, this distracts Oliver and Barry so The Rival comes and frees Slade so that they can take on the heroes. Sara is in shock at Black Siren so is easily knocked out by her. The rest of the super villain team repels down from the buildings to take them on. With the heroes caught of guard and ill prepare they are nearly beaten, to cover their escape Weather Wizard causes hurricane and Black Siren uses her scream to topple a building. Barry unravels the hurricane and The Legends try to halt the buildings collapse. After the hurricane is gone the heroes look around to see the area destroyed with reported casualties coming in.

Part II: Makings Of A Hero
The episode opens with the heroes sitting traumatised on The Waverider looking back at there failure to beat the super villains who they have now dubbed as "The Legion of Doom". Lyla reports back to Flagg where he demands to meet with the heroes. The team arrives where Flagg reveals his real reasoning behind sending Lyla with them. He unveils the "Mask Order" an act that orders all vigilanties and meta humans to come forward to be registered by ARGUS where they will determine there strengths and weaknesses while also deciding whether or not they are fit to continue with their activities.

Flagg says they will be given 24 hours to come back in for evaluation. This immediately tears the team in two. Oliver does not trust the government given his past experiences with them, Stein agrees having been hunted by them in the past for his power with Jax being in immediate agreement, Mick realising that he will never pass decides to ignore the order and Mari feels offended at the need to prove herself in order to continue to be a hero. On the opposite spectrum Barry agree having seen the damage that he has caused with his powers saying that he could use some disipline, Cisco also agrees having lost his brother to Barry's unlimited power, while he no longer blames Barry he agrees the holding back people with that sort of power is in the worlds best interest, Nate having been motivated by his grandfather trusts the government to realise where heroes are needed, Sara desperate to find her sisters counterpart see's agreeing with the order as her quickest means of starting and Curtis chooses not to put his career as Mr Terrific in jeprody so decide to agree to the order.

The next day Barry and his supporters leave for their evaluations while Barry urges Oliver coming with them not seeing something this serious as a choice, Oliver opposes saying to Barry that he has faced worse than Rick Flagg. While Barry arrives for his evaluation, Felecity gets a lead on the Legion so Oliver along with the team who chose not to fall in line go after them. They track Weather Wizard to a warehouse outside Star City, Oliver and Mari engage him and are able to beat him.

Back at ARGUS, Flagg is furious to here that the other heroes are in direct violation of the act so sends Barry to talk to him. Oliver and Mick are interrogating Weather Wizard to find out information on the Legion when Barry rushes in. Oliver is at first glad to see Barry and asks for his help in taking Mardon back to The Bunker. But Barry opposes him saying that he was foolish to go against Flaggs orders while he expects such things from Mick. Oliver is shocked but has no time to react before the Legion barge in to reclaim Mardon. The Flash, Atom and Vixen hold of The Legion while Oliver, Diggle and Mick take Mardon out the back. ARGUS soldiers arrive at the scenes and repel them. Flagg leads them where he informs Oliver that he is under arrest. It then cuts to the Legion where they comment that it is "all going accord to Psimons plan".