Instead of getting Spike a birthday present, Twilight finds herself trapped in a closed universe. A fictional universe, she believes, where nothing is real. Mike has a different opinion about that.
You have had depression for a good chunk of your life, but it seems there'll be a bright light in your life in the form of a beautiful yet blind girl by the name of Snowdrop. This is the story of how she helped you cope.
A human soul is stuffed into King Sombra's body. Having no idea what's going on, and thinking he is in some kind of coma, he just casually strolls into the Crystal Empire.