There are several side quests you can get while exploring the settlements in STALKER 2, or by simply speaking to people you meet along the way. If you talk to Lens, the resident technician in Zalissya, he’ll offer you a job called The Lost Boys.
A regular group who works with Lens has gone missing, and he’d like you to try tracking them down. He can tell you where they were headed and what they were doing, but what happened to them is entirely up for you to discover. When you reach the quest’s end, you’ll encounter a difficult choice that may have positive and negative repercussions with how the stalker faction views you moving forward. You’ll want to pick your choice for The Lost Boys quest carefully in STALKER 2 and see if you can figure out your moral compass.