Mario and Luigi's Stupid and Dumb Adventures

In this anticipated third-season premiere, Mario is in an alternate dimension where everything is reversed. He sees that everyone's persona is wrong: Toad has a deep voice and sings country music, Shrek likes green peas instead of cheesecake and he takes pees instead of craps, Black Yoshi is white and likes Animal Crossing on the Wii, Mama Luigi is smart, and Bowser is working for Chef Pee Pee, as Chef Pee Pee watches Harleyyy and friends.

Mario travels past random dimensions and encounters various characters, such as Charleyyy, SpongeBob, and Dora before having his remote stolen by Donkey Kong and his pants stolen by Diddy Kong. Then he travels into another dimension where Toad is instead wearing the pants, and he needs a Twinkie so Mario can have his pants back

Mario is in a dimension as a baby, then he enters a real life dimension, which is the main point of this episode. At the end, Mama Luigi's alive and then Bowser takes Mario's hat.