Brendan uses his "Drain-Inator" to drain the super villains powers. Now, Brendan now has the villain's powers and is more powerful! Now Phineas, Ferb & the gang must team up with Hulk, Spider Man, Thor, Iron Man, Red Skull, Venom, M.O.D.O.K, Whiplash and Dr. Octopus to save the world! Plus, Phineas face off against Brendan while his loved ones watch. Will Phineas be able to defeat Brendan?