On a chilly morning, the sky falls over the Deserted Meadow and begins to rain. The muffins watch anxiously from the top of the heap as the water slowly rises, flooding their living caverns in a row. The marshmallows catch a few waves of stranded objects and then sail away from the heap that has been almost completely submerged. They want to find a new home for themselves, but unexpectedly meet the Old Water Rat. Rat asks them to help him pull the giant Plug out of the Big Round Drain in the middle of the meadow to save the meadow and its inhabitants.