The circus has come to Mystic, Maine! Everyone is excited about a week of rides, flying trapeze artists, and most especially the fabulous white Siberian tiger. But on the day of the tiger's first big performance, it mysteriously disappears. Some people think it may have escaped, but Jen and Zeke know better -- they know it's been stolen. After other things start going terribly wrong at the circus, it's clear that someone is behind it all!