Chihiro/Sen is a 10 year old japanese girl who was moving house with her parents before they got spirited away, into the spirit realm. The experience was all quite pleasant until her parents were transformed into pigs, and the witch Yubaba forced her to work in the Bathhouse. She was unnamed Chihiro and renamed Sen, because that's how Yubaba controls people.
Being the heroine, Sen used the powers of TEAMWORK, FRIENDSHIP and COURAGE to get her name back and rescue her parents. No face is quite attached to her.
Also she meets a dragon/god/boy called Haku .