Settled into his new life, Lewis seems content living with his magical
Uncle Jonathan and neighbor Mrs Zimmermann. He even has a new best
friend, Rose Rita, who loves to play sports, build Roman ship models and
play with magic--all the things Lewis loves to do too! After discovering
Grandpa Barnavelt's 1859 lucky coin, Lewis is certain that it is
magical, so he puts it to the test--he recites one of Mrs Zimmermann's
spells to awaken its magic. Only Lewis hasn't awakened a good sort of
magic. As he wears the coin around his neck, sinister things start to
happen. Strange letters addressed to Lewis arrive at midnight, a dark
shadowy figure begins to follow him in town and something seems to be
inside his body controlling his actions. As the figure in the shadows
appears more and more, Lewis is possessed by its power, unable to free
himself. Has Lewis awakened a force beyond his control? And can Uncle
Jonathan, Mrs. Zimmermann and Rose Rita make it in time to rescue Lewis?