It's was a hot summer in danville many people wants go to swimming in beaches or swimming pool and eating ice cream but it was melt. Phineas and ferb were get some stuff at the hardware store to buildi a giant electric fan. Then Isabella comes out and say watcha doin then she bring some three other girls who wants to have a cold day named Lilly,Juliana and mary . The three girls went to say hi on phineas and ferb . Then Phineas and Ferb say Hey where's perry?. In the house perry is going to his secret passage the wall then major monogram gave him a mission to stop heinz doofenshmirtz. When perry is in doofenshmirtz building. Heinz trap perry to his trap then heinz began explain his evil scheme. He says that he building a heat-inator so the people in danville will be die of hotness and all