It’s the crossover comic book fans have been waiting for since the inception of the Arrow spinoff show, The Flash. The CW has revealed the official episode synopsis for the two-night event, and it’s pretty epic.
In part one of the crossover event, Team Flash and Team Arrow come to blows in The Flash episode, titled “Flash vs. Arrow,” when Barry sets off on a rage-fueled rampage. Who better to stop the Scarlet Speedster from dismantling Central City than The Arrow.
PART ONE OF THE EPIC CROSSOVER EVENT WITH THE FLASH AND ARROW — Barry (Grant Gustin) is thrilled when Oliver (guest star Stephen Amell), Felicity (guest star Emily Bett Rickards) and Diggle (guest star David Ramsey) come to Central City to investigate a case involving a deadly boomerang. Excited about teaming up with his friend, Barry asks Oliver if he’d like to help him stop Ray Bivolo, the meta-human Barry is currently tracking. Bivolo causes people to lose control of their emotions and has been using that skill to rob banks. Unfortunately, the superhero partnership doesn’t go as smoothly as Barry expected. When Oliver tells Barry he still has a lot to learn, Barry sets out to prove him wrong by attempting to stop Bivolo alone. However, when Bivolo infects Barry and sets him on a rage rampage, everyone is in danger, and the only one who can stop him is the Arrow. Meanwhile, Iris (Candice Patton) is furious when Eddie (Rick Cosnett) tries to get a task force to stop The Flash, Joe and Dr. Wells (Tom Cavanagh) agree the Arrow is a bad influence on Barry, and Caitlin and Cisco deal with a new team in S.T.A.R. Labs. Glen Winter directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Ben Sokolowski & Brooke Eikmeier (#107).Â
For those unfamiliar the comics, Roy G. Bivolo is a Batman, Booster Gold and The Flash villain known as the Rainbow Raider. He is able to remove color from objects, even blinding heroes  by removing their eyes’ ability to process color. This iteration of the character seems to have powers similar to those of the DC villain Psycho-Pirate, manipulating people’s emotions.
The Brave and the Bold join forces in the following episode appropriately titled “The Brave and the Bold,” to stop the boomerang-wielding Digger Harkness, known to comic book fans as Captain Boomerang, from blowing Starling City to pieces.
PART TWO OF THE ARROW AND FLASH CROSSOVER EVENT —Oliver (Stephen Amell), Arsenal (Colton Haynes) and Diggle (David Ramsey) track down the location of a boomerang-wielding killer named Digger Harkness (guest star Nick Tarabay) but are surprised when they come face to face with an A.R.G.U.S. team. Diggle asks Lyla (guest star Audrey MarieAnderson) why A.R.G.U.S. is involved but she defers until Harkness attacks the building, killing several agents and targeting Lyla. The Arrow joins the fight and gets help from an old friend – The Flash (guest star Grant Gustin). Harkness manages to get away and Oliver teams up with Barry again to find him before he can get to Lyla. When Harkness plants five bombs in the city that are timed to explode at the same time, both teams must come together to save the city. Jesse Warn directed the episode with story by Greg Berlanti & Andrew Kreisberg, and teleplay by Marc Guggenheim & Grainne Godfree Schwartz (#308).Â
Fans of The Flash nearly lost it when Captain Boomerang’s debut was teased briefly in the fifth episode of the series titled, “Plastique.”
Part one of the Arrow/The Flash crossover event will air Tuesday December 2 at 8 p.m. ET/PT. Part two will air the following night, Wednesday December 3.
Source: Comic Book