At first, Lilly is an overindulged tween who gets what she wants, since she has a "gift" for manipulating her dad, Henry. Her mother Jill and brother Brandon, are often frustrated by Lilly, as they fear she is spoiled, and in need of self control. Things begin to change when "Lilly D." (The "D" being short for Deluxe) a life sized "Really You" doll, is purchased for the precocious tween. Soon random "accidents" begin to happen; which Lilly is quick to blame "Lilly D." for, as Lilly was told by another girl who had been invited to Lilly's house, that "Lilly D. hates her."