From the Super Mario Wiki
Yoshi starts the level on a cloud and eventually has to hop on a moving platform network filled with enemies which takes him to the Middle Ring. He will have to repeat the same process until he gets to the next area which starts off with some enemies, number platforms, and balloons. He will have to avoid some more obstacles until he reaches the next area, which starts off with a Middle Ring and a Stork Stop. Yoshi will need to grab a Super Star and let Baby Mario cross the spikes. The player will soon find the next area which starts off with a Middle Ring and continues with some enemies and moving platforms, and ends with some Firebars and the goal roulette.
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