The Scooby Gang are hanging out in their tree house. Fred is lifting weights talking to himself in the mirror, Velma is using her computer, and Daphne is looking at her shoes and orders them to be lined up. Then Shaggy orders a pizza, which is delivered instantly by Stu Stukowski. The gang denies eating the pizza when it arrives. Then Scooby finds a rolled up map in his slice of pizza. Velma discovers that the map is said to lead to the treasure of Gnarlybeard the Pirate. The gang sets out to find the treasure of Gnarlybeard the Pirate, only to be attacked by Phantom Parrot, who manages to swipe the map. Following the Phantom Parrot, they come across Dr. Escobar and Shirley, the latter Fred is smitten with. Thinking that the treasure is in the lighthouse, they manage to trap Phantom Parrot, finding out that it is Stu Stukowski. According to him, Gnarleybeard the Pirate is a distant relative of his, and the treasure is not discovered in the lighthouse.