Nancy and Jojo go on a sleepover, but since it's Jojo's first one, Nancy is determined to make it fun and put her at ease, but when it's time for bed, it's Nancy who grows nervous and needs the help of her sister.

Fancy Nancy's sister, Jojo, has done something really bad and Nancy is livid. Jojo drew a tattoo on Nancy's precious doll. When Mom suggests a fancy doll party to make Nancy feel better, Nancy is excited to accept, but what if the doll drama isn't over?