Boomer, sick of Mikayla's awkwardness and overall lack of coolness, decides a summer vacation cruise with the rest of the island's teens could be just the ticket to make her more popular. But when Boz unknowingly steers the ship into the Dark Side waters, the only teens Mikayla befriends are undercover amphibious creatures that have snuck aboard in search of live offerings for their swamp dwelling overlord, a massive bullfrog. When the summer vacation goes awry, the kings and the rest of the teens have to rely on Mikayla to save them.