"When a quiet seaside town is suddenly overrun by hundreds of giant monsters, two sisters are the only ones prepared to handle the situation. Using their keen interest in architecture, local history, folklore and gymnastics, the Monster Sisters, Enid Jupiter and Lyra Gotham, attempt to not only stop the monsters' rampage but also figure out why it's happening."--Page 4 of cover.

Early middle readers.

Issued also in electronic formats.