The Flash and Arrow have a 2 episode crossover in December, starting with The Flash on Tuesday 2nd and the next day, Wednesday 3rd with Arrow. Check below their respective photos and synopsis:
The Flash 1×08 ‘Flash vs. Arrow’
Plot summary – PART ONE OF THE EPIC CROSSOVER EVENT WITH THE FLASH AND ARROW — Barry (Grant Gustin) is thrilled when Oliver, Felicity and Diggle 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 (guest star Patrick Sabongui), 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). Original airdate 12/2/2014.
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Arrow 3×08 ‘The Brave and the Bold’
Plot summary – 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 but are surprised when they come face to face with an A.R.G.U.S. team. Diggle asks Lyla 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. 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). Original airdate 12/3/2014.
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