A new Supergirl trailer is here, and it's a surprisingly emotional look at Kara Zor-El's mission to save her adorable dog Krypto.
In the trailer, which you can watch above, the sweet pup is poisoned, and Kara only has three days to save him. Complicating matters is Eve Ridley's Ruthye, a young girl whose parents were murdered by the poisoner. Check it out above.
