CW’s DC Universe will return this October, but before they do, CW has released the official synopses for all of its comic book shows – including Arrow, Flash, DC’s Legends of Tomorrow, Supergirl, and Riverdale.
The synopsis for Flash season 4, which premieres on October 10 reads as follows:
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.
Here's the synopsis for Arrow season 6, airing October 12:
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.
And the synopsis for DC's Legends of Tomorrow season 3, airing October 10:
THERE’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.
Finally, the synopsis for Supergirl season 3, airing October 9:
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.
Along with its DC shows, CW also released the synopsis for the Riverdale season 2 premiere, which airs October 11:
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