A group of young adults struggle to survive in a world where all the adults have been killed by a mysterious virus.
Amber, Ebony, and Jay reach the City, only to find it deserted. When they reach the Mall, Lex is angered by their reappearance. Salene makes her peace with May, Siva lays her cards on the table, and Patch writes a note to Dee.
S4E50 25 min