In season six, Waverider co-captains Sara Lance and Ava Sharpe have dealt with monsters, time anomalies, and most recently, villains from Hell, but this time they will face something even more challenging and bizarre ... space aliens! After one of their own is abducted by a ruthless alien, this new mission becomes personal. It will take more than the combined powers of John Constantine, Mick Rory, Nate Heywood, and brother-sister duo, Zari and Behrad Tarazi, to save the world for a sixth time.