The CW has released the Official Synopsis of The Flash episode “Elseworlds – Part 1” (5.09) that will be aired on Sunday, December 9 at 08:00-09:00 PM.
EPIC ELSEWORLDS CROSSOVER KICKS OFF TONIGHT
When Barry Allen (Grant Gustin) and Oliver Queen (guest star Stephen Amell) wake up one morning and realize they have swapped bodies with each other, the two set off to find out what disturbed the timeline to cause such a shift. However, things quickly go from bad to worse when they present their case to Team Flash and the gang doesn’t believe them. Barry and Oliver realize they need Supergirl’s (guest star Melissa Benoist) help and travel to Smallville on Earth-38 where they end up meeting Kara’s cousin, Clark Kent (guest star Tyler Hoechlin), and intrepid reporter, Lois Lane (guest star Elizabeth Tulloch).
LaMonica Garrett guest stars as The Monitor.
“The Flash is starring Grant Gustin as Barry Allen/The Flash, Candice Patton as Iris West-Allen, Danielle Panabaker as Caitlin Snow/Killer Frost, Carlos Valdes as Cisco Ramon/Vibe, Tom Cavanagh as Harrison Wells, Jesse L. Martin as Detective Joe West, Jessica Parker Kennedy as Nora West-Allen, Hartley Sawyer as Ralph Dibny/Elongated Man and Danielle Nicolet as Cecile Horton.
In The Flash, Barry Allen was just 11 years old when his mother was killed in a bizarre and terrifying incident and his father was falsely convicted of the murder. With his life changed forever by the tragedy, Barry was taken in and raised by Detective Joe West, the father of Barry’s best friend, Iris. Now, Barry has become a brilliant, driven and endearingly geeky CSI investigator, whose determination to uncover the truth about his mother’s strange death leads him to follow up on every unexplained urban legend and scientific advancement that comes along.
Based on characters appearing in comic books and graphic novels published by DC Comics, THE FLASH is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television.