What's a teenage girl to do when her widowed father takes off to live in Japan? Move in with her straitlaced sister and wreak havoc, that's what! Shooting star Amanda Bynes ("What a Girl Wants," "All That") runs wild in this lively comedy. Although she misses Dad, free-spirited Holly (Bynes) idolizes her big sister, Valerie (Jennie Garth - "Beverly Hills 90210"), a promising public relations upstart with a tidy little place in Manhattan. With Holly's antics turning Valerie's regimented life upside down, it's a good thing these mismatched siblings love each other--or they'd go crazy in no time!