Chen's camp was Chen's temporary base located in Ninjago City's subway tunnels. It was here that Chen realized the transformation spell was wearing off, and that in order to preserve it, they would need the essence of a real Anacondrai.
After being transformed into fake Anacondrai, the Anacondrai warriors traveled to Ninjago and took refuge in the subway system, where they set up a series of tents and planned their attack on the city. Kapau and Chope set off to capture Pythor, the last living Anacondrai.
After Pythor was taken from Kryptarium Prison and brought to the camp, Chen threw him and a swamp rat on a spinning wheel, and the rat began chasing him. As such, Pythor began sweating, and the fake Anacondrai used his sweat to sustain their transformed selves. Afterward, Chen led the Anacondrai warriors into Ninjago to wreak havoc on the city.
Pythor continued to be chased by the swamp rat until he's finally able to free himself. He spotted the Book of Spells and thought about using it to make himself big again; however, Pythor heard on the radio about the fake Anacondrai gaining ground in Ninjago. He then decided to help the ninja.