Ep 19. Simple Simpson

Homer purchases a new gravity-powered car and decides to become a vigilante known as "The Safety Salamander." Meanwhile, Marge becomes obsessed with a Japanese style of living called "Wabi-Sabi" and enlists the help of a decorator to bring the aesthetic into their home. Bart, feeling left out of the family's new interests, decides to create his own superhero alter ego, "Bart-Man." As the three superheroes try to save Springfield from a crooked salesman's scheme, they must also deal with the consequences of their actions and the reactions of their loved ones.