Secondly, an Aussie brother and sister fall through a magical portal into Imperial China, and at some point the sister is zapped into another dimension where a whole lot of French people (read: powdered wigs, corsets and crinolines) have taken a youth serum and therefore can't have babies, so they try to feed it to her so she'll be a child forever and can be loaned to each couple in turn.
I did not imagine these shows. It's like Ocean Girl. They've just vanished. :(