Mario starts off in front some bricks which block the key. He must climb up the first Ladder, then climb the second ladder up to a platform with a Sairesu, which can be defeated with the nearby Super Hammer. Mario then has to go left onto a Conveyor Belt to break some bricks, but he must have Donkey Kong Jr. pull it to the right so the conveyor belt moves left so he doesn't have to fight against the conveyor belt. Once past the bricks, Mario reaches a conveyor belt that goes in the opposite direction to the longer one, where he again encounters Fires which can be defeated with the Super Hammer, another one of which can be found between the two ladders. Mario must then climb either ladder up to a switch and pull it to open the door, then make his way back. There is a ladder connected to the longer conveyor belt which can be climbed down to get back on the ground, though Mario needs a Super Hammer to defeat the Sairesu and break the bricks to acquire the key required to unlock the door and 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: