From the introduction:
Every epic story has a beginning, every long journey has a first step, every franchise has a first installment. For each of the vast multitude of extra-dimensional adventurers called Jumpers, there was a first jump.
And for many, the first jump was the last. Too many eager new Jumpers have immediately chosen to visit their favorite settings, not thinking how dangerous those places are to actually live in. The tendencies of first Jumpers to overestimate their own abilities and prematurely end their chains has caused JumpChan to create a tutorial level of sorts, something to ease Jumpers into their new reality, and provide some basic necessities and survival skills.
In order to properly prepare new Jumpers for the wide variety of environments and settings they will eventually have to interact with, instead of a single setting, you will spend one year in each of ten different Levels. Each Level is a generic form of a popular genre or setting. Because of the tutorial nature of these Levels, you will not be able to take anything from them that was not paid for with Choice Points, except for your own memories and any skills that could have been learned in the real world.
Due to the special nature of this Jump, dying does not end your chain. Instead, you have the choice of continuing with your Chain, without any of the purchases you made here, or trying again. Luckily, you do not have to repeat any Level that you have already completed. Also, this Jump can only be done as your first Jump.