Recycling literally the exact same story?
Last season, The Flash's main female lead, Iris West, was trapped in the "mirror universe". The team were trying to find a way to get her out & she was constantly trying to find a way out.
While on Supergirl this season, Kara Danvers, The Main female lead is trapped in the Phantom Zone. The team are trying to find a way to get her out & she's constantly trying to find a way out
Also on Legends of Tomorrow this season, The Main Female lead, Sara Lance, is trapped with aliens on a ship. The team are trying to find a way to get her back & she's constantly trying to find a way out