The level opens with a cinematic showing Mario trying to run on a conveyor belt moving against him, then turning around and climbing a ladder to reach a Direction Switch. Mario presses it and reunites with the Mini-Marios.
The player first has to jump onto a platform above while the Mini-Marios fall onto a conveyor, collecting the letter T. The player has to press the yellow Color Switch and then the Direction Switch to keep the Mini-Marios from falling into spikes and lead them into the area on the left. With the Mini-Marios past the blocked lasers, the player has to progress to the right and climb down the ladder; the player can then choose to move through the alternating lasers to go below them. Moving left to get the Mini-Marios moving again and having them collect the letter O, the player then needs to press the blue Color Switch and climb down the ladder. The player needs to grab the Trash Can and move right, then they need to toss the can up onto the platform, climb the ladder, and pick the can back up. Next, the player has to use a Springboard while avoiding lasers, and the Mini-Marios will collect the letter Y in the process. Without the Mini-Marios following the player up onto the platform, the player needs to toss the can against the wall on the left and then press the red Color Switch. Now the player needs to move against the right of the area and have the Mini-Marios jump up the Springboard, and finally lead them to the toy box.