A father has been tooken hostage and a women goes to his children for his children to help him. They go to another world and the kids are like robots and the evil man has their father and then they rescue their father but the little boy gets turned evil and his sister has to rescue him please help me find the film I am looking for thanks

A Wrinkle in Time (2003) (http://movies.nytimes.com/movie/304521/A-Wrinkle-in-Time/trailers)