More information about the epic two-part crossover between "Arrow" and "The Flash" has been unveiled.

The first part of the crossover will air Tuesday on "The Flash." During the episode, which is titled "Flash vs. Arrow," Oliver, Felicity and Diggle will head to Central City to solve a case involving a deadly boomerang. During their visit, Barry will ask Oliver to step in and help him stop a bank robber named Ray Bivolo, a metahuman who has the power to cause people to lose control of their emotions.

"At first, Oliver is not too keen on helping Barry with his investigation, but pretty soon he and Felicity and Dig get swept up in it," said Andrew Kreisberg, the executive producer of "Arrow" and "The Flash," according to Entertainment Weekly.

However, when Barry falls victim to Bivolo's powers, he goes into a fit of rage and strikes out against Oliver.

The crossover will continue on Wednesday in an "Arrow" episode titled "The Brave and the Bold," as Oliver, Arsenal and Diggle continue their hunt for the boomerang killer, Digger Harkness. Oliver will also turn to Barry for help when Lyla becomes a target.

In wake of the highly anticipated crossover, The CW released an extended trailer, featuring comic book villians Captain Cold and Heat Wave. The preview also includes a clip of Dig and Cisco making bets on who would win a fight between The Flash and Arrow.

Kreisberg teased that "somebody in the 'Arrow' universe gets fairly badly hurt in the 'Arrow' episode and we see Caitlin dive in as a doctor."

"One of the things that we talked about a lot is the idea that on 'The Flash,' she's a fun doctor, but our tone note for that was to treat it like 'ER' and have blood everywhere and have Caitlin be shaken up," the executive producer continued. "One of the things Caitlin and Cisco realize in the 'Arrow' episode is they've been having a lot of fun, despite being scared in dangerous situations, but the world of the Arrow is a darker, bleaker world. It takes a different kind of fortitude to survive it."

According to ComingSoon.net, The CW also released a synopsis for each episode.

"Flash v. Arrow's" synopsis states:

"Barry 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 is furious when Eddie tries to get a task force to stop The Flash, Joe and Dr. Wells agree the Arrow is a bad influence on Barry, and Caitlin and Cisco deal with a new team in S.T.A.R. Labs."

The synopsis for "The Brave and the Bold" is officially described as follows:

"Oliver, Arsenal and Diggle 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 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."

"Arrow" Season 3, Episode 8, "The Brave and the Bold," airs on Wednesday, Dec. 2 at 8 p.m. ET on The CW.

Watch the trailer for the crossover below.

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