There’s only one plot line I want to focus on in this review of “Human for a Day” and it’s Kara’s struggle with losing her powers. After a massive battle with the Red Tornado android in last week’s “Red Faced” episode, Kara used up all her powers and needs time to heal. No one knows how long she’ll not have her powers and there’s a small fear, on her part, that she’ll never get them back. In talking to the ghost of her mother, she learns that she’ll need time for Earth’s yellow sun to recharge her Kryptonian cells and then she’ll regain her super powers. But, for now, she’s walking around vulnerable like the rest of us.