Instructions
Play through the game and finish all the main story missions. Once you are done the credits will roll and you will be returned to the main menu.
Select "Continue" from the main menu and the game will load. You will start out in your tamer home.
Stand on the pink square on the far right of your home and press "A" to teleport to "Shine Plaza."
Walk right and speak to the digimon "SL Angemon" you see standing here. He will give you a mission where you have to work as a team with three archangels. After the conversation with him is over "Highlight Haven" will be available.
Take the exit on the left of Shine Plaza to reach the "Shine Gate" area. Stand on the yellow square in the upper right of the area and press "A." You'll be teleported to the "Shine Terminal" area.
Walk to the left and stand on the blue square. Press "A" to be taken to the world map screen. Use the d-pad or stylus to move the yellow targeting crosshair over "Highlight Haven." The word "Quest" will be shown in red next to it so you can easily located it on the map.
Press "A" then select "Yes" when asked if you want to move to "Highlight Haven." You will instantly be teleported to the location.