Experiencing burn out and fatigue from their incessant spy missions, the girls are pleasantly surprised when Jerry sends them on vacation to Hawaii. Unfortunately, when the girls arrive at their vacation destination, they immediately become embroiled in a mystery involving the disappearance of volcano researchers on the island. Further investigation discloses that a madman has found a way to erupt all the world's volcanoes from his lair -- and he plans to do so if his financial demands are not met. The girls infiltrate his lair but fail to stop the villain. Suddenly, the girls realize that this was all an elaborate WOOHP test orchestrated by Jerry (who tells the spies that they've failed and will have to go through more WOOHP training). That is, until a real volcano erupts and the spies save everyone's lives. Jerry decides that the girls passed the test after all. In a b-story, the girls look forward to a school dance but are disappointed when it turns out to have a luau/island theme.