Writers block

This journey begins on a bus where a teenager struggles to figure out to write. After many terrible ideas and many unfinished stories a character comes to life to Save the coffee princess and kill the evil marshmallow waitress stopping the poorly dressed piece of gum from saving the love of his life.
He finally finds himself in the middle of a hot chocolate battle zone with only marshmallows to stand on, that are surrounded by steamy cloud demons.
Will the gummy hero save the princess and become king of writer island or will he fail and become nothing more than a snack for the hungry giants in the sky?