Caïros is found arguing with Farlin on a beach, accessed by following the path west of South Span Checkpoint to a area with a ship that sailed from Moonrise TowersX: -212 Y: 87.
If the party approaches, they will be drawn into the conversation. Farlin will explain that she is from the Guild, and will ask the player for help. If the player tries to help Caïros, he will insult them and both parties will turn hostile. They will also both turn hostile if the player tries to come to a peaceful understanding. If the party waits too long to intervene, the two factions will begin fighting.
Spoiler warning! This section reveals details about the story of Baldur's Gate 3.
If Minsc is brought along, he can try to explain that he is the Stone Lord, but Caïros will not believe him.
Normal weapon damage + Superiority DieWeapon damage
Spend a superiority die to deal Weapon Damage + 1d8 Physical damage and potentially force the target to drop the weapons they are holding.