This is my opinion of what should happen when the tv show supergirl crosses over with another tv show called the flash and another called arrow. This is season 1 of supergirl, season 3 of flash and season 5 of arrow. No not the real season but what I think should happen. But villains from krypton come and make it difficult for kara to go home. This is before cisco learns to vibe to other worlds, This is a very diffrent version than what happens in the tv showsAll Rights Reserved