The CW has released synopses for the upcoming season premieres of Arrow, The Flash, Supergirl, Legends of Tomorrow, and Riverdale, which will all air in October.

The CW currently has four shows set in the Arrowverse in its fall primetime lineup. Starting the week, Supergirl will occupy its usual slot on Mondays at 8pm ET. The Flash will air at the same time on Tuesday, followed by Legends of Tomorrow at 9pm. For its 6th season, Arrow moves to Thursday at 9pm after airing on Wednesday at 8pm for five seasons. Arrow will take the day and timeslot of Riverdale, based on Archie Comics, which will now take Arrow's place on Wednesdays.

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The CW has released synopses for all five shows that give fans hints of what to expect when their favorite shows return. The synopsis for the season 3 premiere of Supergirl, titled "Girl of Steel," teases a "mysterious new threat":

DREAM A LITTLE DREAM OF YOU — Kara (Melissa Benoist) deals with the loss of Mon-El (Chris Wood) by focusing all her energy on being Supergirl and the mysterious new threat against National City. Alex (Chyler Leigh) confesses a secret to Maggie (guest star Floriana Lima) about their impending nuptials. A citizen of National City has a mysterious connection to Kara, and Lena (Katie McGrath) makes a bold move. Jesse Warn directed the episode with story by Andrew Kreisberg and teleplay by Robert Rovner and Caitlin Parrish.

The Flash picks up some time after Barry's sacrifice with its 70th episode, "The Flash Reborn":

With Barry (Grant Gustin) in the speed force, Iris (Candice Patton), Kid Flash (Keiynan Lonsdale), Joe (Jesse L. Martin) and Vibe (Carlos Valdes) have taken over protecting Central City. However, when a powerful armored villain threatens to level the city if The Flash doesn’t appear, Cisco makes a risky decision to break Barry out of the speed force. However, the Barry that comes out isn’t the same Barry that went in. Glen Winter directed the episode with story by Andrew Kreisberg and teleplay by Todd Helbing & Eric Wallace.

The main cast of Riverdale in a poster at Pop's Diner.

Legends of Tomorrow heads into an 18-episode 3rd season, its longest season to date. The season premiere is titled "Aruba-Con":

HERE’S NO PLACE LIKE HOME — When the Legends realize that they broke the timeline, Rip Hunter (guest star Arthur Darvill) arrives with his new organization – the Time Bureau – to relieve them of duty. The Legends are thrilled to get a chance to put the team back together but a new threat arises when Rory (Dominic Purcell) spots Julius Caesar (guest star Simon Merrells) in Aruba. Sara (Caity Lotz), Nate (Nick Zano) and Ray (Brandon Routh) devise a plan to steal the Waverider back from the Time Bureau in order to try and stop Julius Caesar from conquering the modern world. Victor Garber, Maisie Richardson-Sellers and Franz Drameh also star. Rob Seidenglanz directed the episode written by Phil Klemmer & Marc Guggenheim.

Season 6 of Arrow will begin with "Fallout," an episode that will use flashbacks to explain the fates of its main characters after the explosive season 5 finale:

THE AFTERMATH — Oliver (Stephen Amell) deals with the fallout of the explosion on the island. James Bamford directed the episode written by Marc Guggenheim & Wendy Mericle.

After a well-received 13-episode first season, The CW renewed Riverdale for a 22-episode second season that will premiere with "A Kiss Before Dying," a reference to a 1950s film noir based on a book by Ira Levin:

THE ANGEL OF DEATH — As Fred’s (Luke Perry) life hangs in the balance following the shooting at Pop’s diner, Archie (KJ Apa) struggles with the emotional aftermath of what he witnessed. Meanwhile, as Veronica (Camila Mendes) steps out of her comfort zone to support Archie, she learns that her father Hiram (Mark Consuelos) has arrived to Riverdale earlier than expected. Elsewhere, at Pop’s diner, Pop Tate (guest star Alvin Sanders) recounts the chilling details of the shooting, which leaves Jughead (Cole Sprouse) and Betty (Lili Reinhart) questioning the gunman’s true motives. Lastly, after running into Cheryl (Madelaine Petsch) at the hospital, Betty and Kevin (Casey Cott) are surprised to learn about the fire at Thornhill. Rob Seidenglanz directed the episode written by Roberto Aguirre-Sacasa.

Many of the synopses rehash details that have already been mentioned in interviews with cast and producers, though some do offer interesting teases. The description for Arrow, however, was particularly vague and carefully worded to avoid any spoilers.

NEXT: The CW Was Warned Long Before Riverdale Crash

Season 3 of Supergirl premieres on Monday, October 9 at 8pm. The Flash and Legends of Tomorrow return on Tuesday, October 10 at 8pm and 9pm, respectively. Season 2 of Riverdale premieres on Wednesday, October 11 at 8pm. Season 6 of Arrow premieres on Thursday, October 12 at 9pm.

Source: The CW