Sixteen-year-old Adrienne Lewis is in charge of eight-year-old Emma Warner, the youngest member of the snooty Warner family. Emma is an evil genius who has gotten all five previous nannies fired — and she's the good news. Because then there's Emma's half brother, Graydon, who goes to college — yet always seems to be lurking around waiting to hit on Adrienne. But worst of all is Emma's beautiful seventeen-year-old half sister, Cameron, whose reputation as a wild girl, a liar, and a user is known to everyone . . . everyone, that is, except Adrienne.