Paper Mario: Sticker Star -- 5-3 Long Fall Falls

We continue floating on the raft when a giant fish appears in the water. It will approach and leap, so steer away from it or it will break off a log from the raft. We go down a waterfall but the fish flies away. The next section of river is foggy. The river forks. The straight path leads to a dock to the comet piece. Jump over the fence to find a door drawn on the side of a rock and an item block with a Big Shiny Infinijump. The Secret Door leads to the Luxurious Bed. This opens the path to 5-1.

The path to the left leads to a winding river that leads right back to the waterfall. Paperize when you see ruins to find a scrap peeling off. Replace it and steer towards it. It leads to the comet piece. Go to the right out of the ruins into a room with a Megaflash Infinijump. This opens the path to 5-4.