Salvo braves a ravaged Buenos Aires to reach Elena and Clara's apartment, discovering that human survival instincts can be as deadly as the toxic snow.

Searching Clara's school for clues, Juan and Elena meet Pablo, a student in distress. Meanwhile, Tano attempts radio contact as Juan's visions intensify.

Tano and Juan head downtown, where they encounter a barricade and army forces. Confronted by a sudden threat, they receive help from an unexpected lot.

The group heads for the island, with Tano making a tough choice to ensure passage. On the way, they discover a refugee camp inside a deserted mall.

After a risky train mission back to the city, a mysterious bright light lures Juan away, leading him to an unimaginable discovery.