Harold and Chester could hardly believe it. The Monroe family was going on vacation without them! Bunnicula, the family rabbit, would be boarded with a neighbor. But they, the family's loyal dog and cat, were to stay with strangers at the foreboding Chateau Bow-Wow...

No sooner had Harold and Chester settled into their bungalows than Louise, a French poodle involved in a messy love triangle, disappeared. Chester believed the six other guests were capable of anything -- even murder. Would you trust a pair of dachshunds who howled at the moon and were rumored to be part werewolf? Or crazy Lyle, a cat convinced he was a secret agent?

All Harold and Chester knew was that in spite of themselves they had entered the crime detection business and neither foul play nor foul weather would stop them from finding out whodunit!