Looks like it's time for "Plan B" if Kara's (Melissa Benoist) Super Friends don't want to lose her forever to the Phantom Zone, with this week's episode of The CW's Supergirl "Prom Again!" finding Nia aka Dreamer (Nicole Maines) and Brainy's (Jesse Rath) timey-wimey plan to save her having hit more than a few snags[...]