Below is a walkthrough for the Colony 15 Soldiers Missing standard quest in Xenoblade Chronicles 3. To obtain this quest, listen in on the conversation at the City then head to a rest spot and discuss The Colony 15 Folk topic. Please note that Triton is required to be in your party for this quest.
After accepting this quest, head to the Michiba Canteen in the City to trigger a cutscene. Next, travel to the Sentridge Harbor Control landmark in the Cadensia Region then approach the ship to trigger a cutscene. When it concludes, fast travel to Pioneer’s Inlet landmark on the western side of Cadensia Region to trigger another cutscene. Head into the inlet then work your way through the puzzles to reach the Cay of the Trick Grotto where a cutscene will trigger. During the cutscene, you’ll receive the Seven Shards. Return to Sentridge Harbor and speak with Miyori to complete the quest.
Rewards:
- 6700 EXP
- 2950 G
- 3 SP
- Ceramic Underguard x1