Lars and Foz are in the Wolong Nature Reserve in China, taking care of the 2,000 pandas that live in the wild there. Grim HQ has also landed in the Wolong reserve, having been through a monsoon. The rain has washed Grandmaster Glitch's ship sparkling clean. Glitch is grumpy - he likes his Grim HQ to be dirty and, well, grim! He tries to use his mud splatterer to make Grim HQ dirty again, but he can't get high enough to reach the top of the ship. He needs to build some scaffolding, so he sends his trusty Grimbots off to find him some scaffolding material. They start chopping down the bamboo forest, not realising that if the pandas don't have enough bamboo they will go hungry. The Go Jetters need to stop those Grimbots!