Supergirl

After a power source for the community of Krypton survivors is accidentally whisked to earth, Kara-El, cousin to Superman and niece to Jor-El, chooses to go to earth to find it, and bring it back. 

Upon her arrival, she becomes just as powerful and Super as her cousin, but encounters dangerous battles and unexpected obstacles. 

When a mean spirited woman who practices rituals of the occult takes the power source for herself, and uses it to cause destruction and attempt zenith human status.