Werewolf Phineas and Vampire Ferb (Well, at least it's way better than Twilight. Ughhh)

When Phineas is bitten by a werewolf, he turns into a werewolf, and tries his best to stay inside on the night of a full moon. Meanwhile, Ferb turns into a vampire, and has the same problem as Phineas vice versa.

Summary
One night, Phineas is searching for Perry, but then he sees a giant, viscous dog. The dog bites him, and Phineas runs away before the rabies could sink into his skin. The next morning, he learns that he is a werewolf at the doctor, and he is supposed to stay inside, in a room windowless and doorless.

The next night, Ferb went to search for Perry, and sees a bat. He tries to get close to the bat, but it then transformed into a human, and bit Ferb. The next morning, Ferb's dead body is gone...

While the Flynn-Fletcher Family is still depressed about Ferb being gone, Phineas notices that the next night is the full moon. He decides to modify the house, so it is made of only walls, and the only way to escape is a secret passage way. He asked Candace to place it, so he didn't know were it is.

Meanwhile, a bat flew right into the Flynn-Fletcher house. The bat transformed into... Ferb. Phineas was amazed, and Ferb told him that he is a vampire. Ferb said that Ferb can only be out at night, and Phineas said he could not go out on full moons. Then the radio in the room announced a tornado warning at Danville.

The tornado flew over the P&F house, making the roof fly off. Then, Phineas started transforming into a werewolf, and lost control. Much like in origanal werewolf mitholigy, Phineas lost his memory of being Phineas, and was just a viscous dog. Ferb and Candace ran off, and tried thier best to outrun a werewolf.

After running many miles, they hid at Isabella Garcia-Shapiro's house, and told her that Phineas is now a werewolf. Ferb also mentioned that hisself was now a vampire. Ferb then had an idea. Ferb secretly followed Phineas werewolf, and then transformed into a bat. Phineas chased Ferb, and chased Phineas into an abandon field. Ferb flew off, and now Phineas couldn't hurt anyone.

The next morning, they went off to the abandon field, and saw Phineas, sleeping with some tiny injuries on his face. Phineas woke up, and was embarressed about becoming a werewolf. Phineas decided to move his room to the basement with no windows doors, and only a secret portal to upstairs, which only some one from upstairs could activate. Now Phineas could stay normal during full moons, and Ferb can live at day (vampires die at the sun).