Bart goes back in time to 1974 to read a comic book and causes his mother's and father's marriage to never exist. When Bart comes back to the present, finding out that his father is Artie Ziff now. Bart starts to live in the big, modern and more expensive house, also with his two unnamed sisters reminding him of Lisa and Maggie. Bart's hair changes and is curly like Artie's and his sisters'. He also has his own bully-butler, who is actually Nelson.
When Marge Ziff divorces Artie in favor for Homer, he becomes the kids' stepdad.