Once the princess was finished fucking you, you followed her into a room that shows a map of the land, that has 12 heart shaped crystals in different colors near every location. The princess pulls out the copy of the map, and it shows where the heart shaped crystals were located on the same copy as you open it.
"My uncle, the Dark One we call, is planning on taking over the kingdom," Angela explains. "The only way if you'll be able to prevent that from happening, is if you collect all 12 crystals for me, and bring them back here. I have a way to stop him, which will require the sword you have there." You take a look at the map, and figure out which ones to find first, as you fold it back up, and place it in the pouch of your belt. "Oh, and one more thing, before you go," Angela explains, giving you an envelope.
You open the envelope, and find that it was a note to all guards explaining why you come, and take care of everything, from the princess. "This note will help you on your journey," Angela explains. "Just show it to the guards at each gate, and they'll let you through."