In Thrown towards unreality, your best friend betrays you and she throws you down the hole, also she loses her magic arrow. Then, when you have just landed on the ground, you get that and you get the ability of shooting the discovery bullets, that have an area in which you can see the real zone.

From this point, you will have to use the magic arrow, your basic abilities and others that you will find in the different zones, to return back to where she threw you towards the unreal map, and fight with her.