A rift in eastern Gerudo Desert suddenly becomes bigger, and Tri is able to create an entrance into it.

Find Tri's Friends, Part 1

Tri says there are five friends stuck in this area. Start by going east, then north on the islands of sand. Go west behind the statue, then stand on the west edge so you're facing the glowing object on top of the pillar on the left. Create a Flying Tile and jump onto it, then fall down onto the pillar. Check the glowing object to find one of Tri's friends.

Find Tri's Friends, Part 2

Fall down off of the pillar. If you bought the Gerudo Sandals in the Gerudo Town shop, you can equip them here to stop sinking in the quicksand. Then go northwest and jump onto the floating column, and walk up it so you can jump onto the island at the north end.

Go east to reach an island with a ladder leading down. Go down the ladder. There are monsters that drop from the ceiling. When the first one falls, bind to it and push it forward until it is centered below the vertical tunnel, then release it. Let it go upward (or if it doesn't go upward, bind to it again and move it left or right as needed). Then approach it so it falls again, and jump on top of it. When you reach the top, go to the left.

Fall down below, and go to the left, and make the two platforms fall, then bind to the upper platform and pull it backward until it can go up the vertical tunnel. Go past it when it is moving upward, then go to the left and make the leftmost platform come down. Jump on top of it, then when the platform goes up, go to the glowing object and check on it to save another of Tri's friends.

As you go back through the cave, use monster echoes or swordfighter form to defeat one of the falling platforms. You can learn its echo, the Platboom echo.

Then go to the east side of this cave and go up the ladder.

Find Tri's Friends, Part 3

Go north and use echoes to go up the steps in the ledge. Then go west, then northwest to the island there. You can then go east where there are some islands floating above each other. Create Platboom echoes to go up to those islands. You may need to use a trampoline or other echoes to get on top of the Platbooms that you create. Keep making your way upward to find another glowing spot. Check on it to save another of Tri's friends.

Find Tri's Friends, Part 4

From here, go west and fall onto the island there. Approach the petrified person, and there will be a cutscene. Create a Platboom and use a trampoline or other echo to get on top of it. Then fall off onto the tree stump and check on the glowing object to find another of Tri's friends.

Find Tri's Friends, Part 5

Then go south to fall down the ledges, then go southeast to the island there, where you went down the ladder earlier. Go east (not down the ladder) and make a Platboom echo to go up to the top of this sideways island. Go east and make a Flying Tile, and jump on it to go across to where there is a boulder with a purple glow around it. Bind to that boulder and pull or push it, then check on the glowing object where it was.

After you Find Tri's Friends

After you find all of Tri's friends, there will be a cutscene. Tri's level gauge will increase, and you will get 2 Might Crystals. There will be a cutscene.

Go to the Sanctum

Warp to the waypoint south of the oasis waypoint, then go south, then west to the quest destination. Approach the soldier and there will be a cutscene. Then go into the cave to reach the Cryptic Cavern.