Goma Plateau

Goma Plateau (ゴマ山 Goma Mountain) is the upheaved portion of the Goma mountain range that was created by the Golden Sun event, and is one of the earliest locations in Golden Sun: Dark Dawn. Being located near Mount Aleph, Isaac chose to build the cabin on one of the plateau's outcroppings, allowing him to keep an eye on Mount Aleph via a spectacular view.

Goma Plateau's map starts with a long bridge, connecting between the cabin's area from west to the rest of the plateau. Crossing the bridge leads to two possible roads. Going south leads to the overworld, and going further east is a cave entrance leading to a single, large, cavernous room, which contains a Psynergy Stone. Beyond this cave is the path into Tanglewood, which itself leads into the Abandoned Mine; these three areas together function as the game's introductory dungeon-style area.

Introduction
The first thing that happens when the game officially starts is Isaac and Matthew walking back to cabin after collecting supplies from Patcher.

Isaac will give Matthew a lengthy introduction to the world 30 years ago. After appealing to the Wise One, Garet appears giving more information.

After mentioning the Soarwing, they watch Tyrell be a brat and take the soarwing wihtout reading the instructions. This leads to Tyrell getting into trouble, thus the player must rescue him. While finding ways to save Tyrell, Isaac tells him to fly to the peak and into a cave. They will all rescue him, even though Garet thinks Karis and Matthew will slow them down. Isaac tells the kids to gear up and meet them by the bridge.

Walkthrough
In the cabin, Karis will give us something from Isaac, a Leather Cap! She will then teach us how to equip items by using our item menu and then show us how to save our game. This unlocks the Travel Log option in our menu, so we can now save whenever we want.

Open the chest nearby to acquire a Short Sword, and then equip it in your menu to arm yourself. You can also check out Issac's diary on the nearby table to learn more about the Mourning Moon.

Head up the ladder and inspect the house. You can find the Sun Saga book on one of the bookcases to the left (which you can use to tell the story of the first Golden Sun), as well as two more encyclopedia entries on different travel psynergies (Move and Growth, both of which Matthew already knows).

Head up the stairs nearby to get the Padded Gloves from the chest. You can also check out the telescope nearby if you wish for a good view of Mount Aleph. Now that we're done, lets go talk to Karis, and she will join our party! She comes with her own basic equipment and a spell of her own: Whirlwind.

Head out of the house and go down the southwest path to get to the garden area. You can find a Herb in the southern pot here. Now head to the east to eavesdrop on Isaac and Garet, who are planning on putting you two to the test. Now head eastward to the Goma Plateau.

Head onwards, towards the cave to the east. You can try to go west down the steps, but Isaac will just stop you as that isn't the proper way.

Once inside the cave, a light will flash a few steps in, which can only really mean one thing: Battle Time! Well, it would be, but Isaac and Garet step in first to let you know that walking around like this will eventually lead to battles. Move on a little further to get into your first battle.

This one is pretty easy, so just attack to win. Keep heading down the slope to find a rock column blocking you way. Try to use your Move psynergy on it and Isaac and Garet will stop you and explain how to use psynergy from the menu and how to assign it to shortcuts. Move the rock column and you'll also learn about recovering PP by walking as well as Psynergy Stones.

Keep going onwards, exiting the cave. Go down the steps when you get back outside and move the rock column down here to the right so you can use it as a stepping stone.

Further on, Isaac will explain about the upcoming forest, Tanglewood.