Read to rescue a girl who was stuck in a capsule on an illithid ship in the Baldur’s Gate 3 prologue
So, you will meet the girl locked in the capsule on the upper deck when you break through the mucous membrane and find yourself inside the ship. Chat with her and choose any options. Whether you pass the check or not, the hero will never be able to open the capsule.
But that’s not all! Even if you fail to open the capsule itself, know that it contains Shadowheart – your potential companion. She will escape the falling ship anyway, and you will meet her at the ruins of the Ruined Shore.