Kara was trapped in the Phantom Zone fighting off Zoners for months until Clark and Lois arrived due to the Crystal of Knowledge. She attacked them at first but after discovering who they were, she refused to open the portal because she didn't want to make the same mistake Clark made when he was in the Phantom Zone. Eventually Clark convinced her to open the portal for Lois and then Kara open the portal and pushed her into it. Then a phantom wraith, Faora, attacked Kara, injuring her and escaped through the portal before it closed, possessing Lois in the process.