You are Mario. You get an urgent message from your brother Luigi. "Mario, Princess Peach has been captured...AGAIN! As you might have guessed it was Bowser who did it...AGAIN. You will have to fight your way through 5 worlds and then kill Bowser...AGAIN. He has 3 weak points that you must hit. He's guarding the portal that leads to her chamber. You better hurry up and save her...AGAIN! Seriously, you need to guard her better bro. Sincerely, Luigi