Plessie's Plunging Falls, otherwise known as World 1-4, is the fourth standard course of World 1 in Super Mario 3D World. It takes place in a large river, and introducess Plessie. It is unlocked by completing Mount Beanpole.
The course takes place in a large river, with waterfalls and crevices. Using Plessie, there are also small ramps to jump off of and speed boosters. Splounders are the only enemies present in this stage, and Plessie can defeat them by jumping on them.
- Green Star 1: At the beginning of the course, players will find a ramp that they must jump off of to reach the first Green Star.
- Green Star 2: Halfway through the course, players will find a thin, bright colored waterfall that they must ride into to find the second Green Star.
- Green Star 3: Near the end of the course, players will jump off a large cliff. At the start of the drop, players will find the final Green Star.