From the Super Mario Wiki
This level starts with the player on a short platform. At the end is a ? Block where the player can get a Super Bell, which is helpful for the fight with the pink Hisstocrat. The player needs to go to the top of the staircase and jump on the gondola that leads to the boss fight.
During the boss fight, Hisstocrat will pop out of the ground, causing lava rocks to fly everywhere, which form into a pool of lava when they touch the ground. She will then summon her minions, which are snake-like creatures with plates on their heads. The player needs to jump on the plates and jump onto Hisstocrat's head, causing her to take damage and retreat into the ground before popping out again. Sometimes her minions' plates have cracks in them, and standing on them will cause it to break, making the player fall or get bitten by the minion. Sometimes Super Bells will appear on the plates, so that Cat Mario can climb up the minions, making the boss fight easier. After the player has defeated Hisstocrat, a Warp Box leads to the Flagpole.
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