Mario starts at the bottom next to the Key. Mario must grab the key, activate the Spring block, then place it where he can jump on it. He must then go over to the Road Block to activate it and place it slightly above where the blocks are. Mario must then throw the key up the bridge, then go over to the Ladder Block and place it between where the blocks were so he can climb up to the bridge and reclaim the key. Then, Mario must activate the next Road Block and place it slightly above the blocks, then throw the key up to the bridge while he goes to activate the Ladder Block and place it out of the way of where the blocks were and climb up it. Then Mario must activate the last Spring Block and grab the key, then he must jump on the spring to get up to the last platform. There is a ladder on the far right to get back down if Mario loses the key on the way up. Mario must simply go over to the door with the key to end the level.
Pauline's lost items
Within this stage, Pauline's lost items can be found in the following order and in the following places: