It''s Stacy''s turn to take care of her school''s pet fish when somebody pulls a prank. The trickster dumped a complicated concoction of chemicals from the science lab into the fountain, and now the fish are in danger! Stacy and her friends from Sifu Faiza''s Kung Fu school must use multiplication and division to solve the who, what, and when behind . . . The Fishy Fountain.