The mushroom kingdom has been sucked into the movie "MISSION: IMPOSSIBLE". In the world of high technology, Bowser worked with his men to build a fortress equipped with state-of-the-art technologies such as detection sensors and elevators. In response, authorities appointed Bowser's foe Mario as an agent and assigned him the task of taking the fortress. They also sent this P.S. "Be careful of the detection sensors located throughout the fortress. If you show perfect stealth behavior that goes undetected, we will give you additional celebration gifts."