During what appears routine questioning, they unsuspectingly give away vital secrets about Marineville. While Stingray is on patrol, the base is attacked from below. The Invaders are unaware that Troy is aware of the invasion and they are taken by surprise when Stingray comes to the rescue. Two amateur divers trick the Stingray crew into helping them recover an enormous and priceless pearl from a giant oyster. Marina is concerned about a legend of bad luck involving these giant oysters and her fears prove correct when Troy finds himself in dire peril.
Aid comes from an unusual source when the protective satellite oysters come to their rescue.
When Stingray comes to the rescue of two crazy treasure hunters, Troy runs short of air and dreams himself to be the master of a fabulous undersea castle with Atlanta and a talking Marina at his beck and call. All is well until the Aquaphibians attack. As the palace falls to ruin around him, Troy awakens safe and sound aboard Stingray. Marineville is invaded by a film crew with everyone getting to play himself but Troy who is replaced by a dashing actor who both Atlanta and Marina are smitten with. The producer of the film is none other than X20 who plans to use the script's battle scene to kill Troy.