Pebbles was sleeping under a tree on a mountain when the tree's roots popped out of the ground, weathering Pebbles. He tumbled into a mountain stream and was washed down the mountain very fast, unable to see. When he reached flat land, Pebbles was exhausted. He was carried further by an old river where he felt like he was on a meandering roller coaster. Pebbles eventually reached a delta where more sediments joined and some were carried off by waves, making Pebbles feel like he was in bumper cars. Pebbles was finally washed onto a beach as parts of him broke off in the crashing waves. Looking at how much he had eroded, Pebbles realized he had become a grain