When Madame Bearsaud decides to open a branch of her world-famous Wax Museum in Beartown, the Cubs might be thrilled but the town's more respectable citizens are up in arms. During the museum's gala opening--with all of Beartown in attendance--an electrical storm causes the lights to go out and suddenly those wax figures begin to look mighty eerie! When the lights come back on, Lady Grizzly's diamond necklace is still around her neck--but why are the dogs so interested in it? And just why is Madame's Igoresque sidekick suddenly walking without a limp? Something's fishy in the wax museum and it's up to the Cubs to track it to its source.