Old-fashioned dog Detective Paw and his young partner, Patrol Officer Prickles, a porcupine armed with the latest in police equipment, are called to find out who stole the money from Piggy's Bank.

The Alden children, who are on vacation on a deserted South Seas island, discover clues that suggest that they may not be alone.

When their favorite pizza restaurant almost goes out of business, the Alden children try to help their friends stay open while they find out who is behind all their problems.

"Hidden behind the wall of their guest room, a mysterious journal leads the Aldens on a search for a valuable collection."-- Provided by publisher.