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When a government ship carrying rare coins is mysteriously sunk off the Coral Islands, Pitfall Harry, Rhonda, and Quickclaw cut their Hawaiian vacation short to investigate. The culprit is none other than The Shark, a ruthless pirate leader and longtime enemy of Harry. Racing against time, the trio dives to the wreck, survives underwater traps, evades mechanical sharks, and tracks The Shark to his hidden island lair. With teamwork, improvisation, and a few lucky breaks, they sabotage his escape, recover the stolen treasure, and deliver The Shark back into custody — all in a day’s work for Pitfall Harry.

While escorting the priceless Star of India ruby across India, Pitfall Harry, Rhonda, and Quickclaw are ambushed by a gang of thieves working for the notorious villain known only as The Spider. A mysterious clasp left behind leads the trio deep into the jungle, where they infiltrate the Spider’s hidden temple disguised as his henchmen. Inside, they uncover a massive operation—and a giant pet spider—designed to eliminate intruders and steal the ruby for good. Captured and nearly fed to the monstrous creature, the team must improvise their way out using quick thinking, teamwork, and a bit of slapstick luck. In the end, they recover the ruby, defeat the Spider, and turn him over to the authorities… only to discover that even villains have baby spiders waiting in the wings.