Land Before Time Brave

Cera gets tired of her father and his bossy ways. She one day encounters a Rainbow Face and asks him to help her change him. He gives her a magic Tree Star. It changes him all right, into the biggest of the Sharpteeth. She now has 3 days to get things right before Topps remains a Sharptooth for good. She also learns about and has to run from Mordul, who also used the magic.