Twelve-year-old Cassie has a lot to cope with when her father moves "out of the picture." Her mom's constantly working overtime, her teenage sister's going AWOL, and her little brother seriously needs attention. It's up to Cassie to prevent total chaos at home -- or so she thinks. She can't control everything, though. At school Cassie's two "best" friends are turning nasty, and a cute boy is sending mixed signals. And then there's Mr. Mullaney...