He went into a parallel dimension unto where there is no internet. Dogs control humans, and he trys to find his way out. Luckily he snuck into the dogs lab, in help with some human rebels, and got a special device. With this device him and the rebels came back into this dimension, the problem is he came back during the 1600s. Some of the rebels didn't mind since they liked this non technology time, but most of them didn't. They repaired the device and went into the future. They landed at 4509. Most of them were happy, as was Anonymous, so almost all of them stayed. Two though, came back into the late 1900s. Those two are now known world wide as Bill Gates and Steve Jobs. To answer your question in short, Anonymous is stuck in the future at the time of 4509. I hope this will clear everything up with you guys.
I never even got to meet him though