The Cave Stalker civilizations share word of entrance chutes that send in animals from the Pacific Ocean, in order to stabilize the ecosystems in the Nightlight Zone. Not long after, research teams attempt to study the chutes, in order to discover where they lead. This angers the Watchers at the edges of
the Border, and out of fear that they would escape their realm, the Watchers would create a series of events that would destroy the Cave Stalker civilizations.