1x6 - Smallville Legends: Kara and the Chronicles of Krypton

Kandor is being bombarded with missiles. Zor-El is changing his bloodied clothes when Kara wakes up with no memory of what happened before. Zor-El tells her that she was hit by a crystal and that she is being sent to Earth to meet her cousin Kal-El. Kara says that the journey is three years and that everything she knows and loves is on Krypton.