Plack Beach is a location east of Cavi Cape and south of Dimble Wood. Bowser firsts comes through here in the beginning of the game. Bowser then meets Broque Monsieur, who is stranded on an island. Bowser pulls the island to the main land with the unknown-to-him help of Mario and Luigi who stimulated his arm muscles. Broque rewarded Bowser with the Vacuum Block and taught Bowser how to use the Vacuum technique.
Bowser then found and fought the Sea Pipe Statue that was brought to life by a Fawfulcopter. After the statue was defeated, he realized his fire breath was gone, and discovered that Starlow (who claimed to be named "Chippy") was inside his body. He then ordered Starlow to go figure out what was wrong. Starlow then sent Mario and Luigi to investigate. Mario and Luigi eventually made it to the Flame Pipe and fought the Scutlet that was blocking the fire's flow. Bowser then burned down the tree that was blocking his path, and met again with Broque. Broque explained that his dog, Broggy, was being disobedient and needed to be taught a lesson. Bowser battles Broggy and wins. Broque and Broggy leave, saying to visit them in Dimble Wood where they own a shop.
The area is later explored by Mario and Luigi themselves, meeting and solving puzzles for Kuzzle, (one of which rewarded them with the Spin Pipe attack) as well as battling Chakron and procuring his Star Cure.
Many tooth-like structures with gray chips in them border the area. These chips give a plaque-like impression, hence the area's name. The fad Squid Fit first appeared here.