In the seventh and final installment of the Masks series, nothing comes easy to sixteen-year-old Eric Plath — and the Shadow Puppet. On one hand, Eric suffers through the tedium of more homework, more groundings from irate parents, and sudden and inexplicable attention from mutated killer mannequins from the Shadow Puppet's cabal. On the other hand, those evolving mannequins appear to have rattled a supervillain's schemes of terrorizing Vintage City, and no one — not even the superheroes and the Sentries — can figure out what's happening.
In the middle of this spiraling supervillain craziness are the growing numbers of disappearing teenagers, including Deena Alvarez, Eric's good friend who's in the process of transitioning behind the backs of her disapproving parents and grandparents. And the only clue dropped into Eric's lap makes him an even bigger target to a supervillain who desperately needs it back.