One day Finn will be immune to Flame Princess's touch.
One day we will find out where Finn came from.
One day Susan Strong will reveal that she is human.
One day we will find out Marceline's back story.
One day Princess Bubblegum will find love.
One day we will find out Flame Princess's back story.
One day the Lich will return.
One day Marceline will find love.
One day a prince will come to the Land of Ooo.
One day Ice King will find love.
One day we will all figure out these things.