Mid-season finale synopses!
THE FLASH, "Elseworlds, Part 1″ (airing Sunday, Dec. 9 at 8/7c)
When Barry Allen and Oliver Queen 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 help and travel to Smallville on Earth-38 where they end up meeting Kara's cousin, Clark Kent (
Supergirl's Tyler Hoechlin), and intrepid reporter Lois Lane (
Grimm's Elizabeth Tulloch).
ARROW, "Elseworlds, Part 2″ (airing Monday, Dec. 10 at 8/7c)
With Oliver and Barry still stuck in the other's bodies, the two get a lead on John Deegan (
Lost's Jeremy Davies) and head to Gotham City with Supergirl to figure out why their reality has changed. While there, they meet the mysterious Kate Kane (
Orange Is the New Black's Ruby Rose), who provides them with information that leads the group to Arkham Asylum.
SUPERGIRL, "Elseworlds, Part 3″ (airing Tuesday, Dec. 11 at 8/7c)
Supergirl, The Flash, Green Arrow and Superman engage in the battle of their lives.
and of course...
LEGENDS OF TOMORROW, "Better than Elseworlds″ (airing Monday, Dec. 110 at 9/8c)
After Constantine breaks the cardinal Legend rule, you can't change the past, he, along with Charlie and Zari try to deal with the ramifications without telling the rest of the Legends. Even though Zari encourages them to just fix the problem, Constantine and Charlie are determined to find another way, but only continue to make things worse.