The next morning she wakes up in Jessica's bed and that she has suddenly become so. Initially basking in the adulation of friends and teachers, Jenna-as-Jessica marvels at how much easier her life is. But the glow quickly fades as she learns of the intense pressure Jessica is under to maintain her position as a role model and the hollowness of her fame. Meanwhile, no one seems to know what has happened to Jenna. And with time, they start forgetting that Jenna ever existed. It seems that the true cost of becoming her cousin is that her own life will disappear.
While body-swapping is hardly a new idea, the theme is treated deftly by Liang, who uses the artifice to explore self-identity and how intense social pressures lead us to make trade offs. The inevitable moment when Jenna finally realizes how flawed Jessica is combines with an urgent sense that she is quite literally losing her own self in trying to be her cousin. A short digression into racism, while itself throwaway, drives home the shallowness of fame. Another aside about academic dishonesty casts a shadow over Jessica's coveted narrative of success. While both Jessica and Jenna turn out to be flawed characters, the story avoids demonizing and instead teaches that no one is perfect and that there is no intrinsic value in trying to portray yourself as such.
Marketed as YA, the material is tame and the story skews to a young teen demographic, despite its older protagonists.