Quick recap
The second season, ten episodes, begins as the 2036 Purge night ends and follows the year up to the 2037 one. Ex-cops turned bank robbers, an NFFA detective investigating the suspicious death of a scientist friend, college students who spent the night on a scavenger hunt and now cope with trauma, and a couple who survive an assailant and learn he was a hitman sent for the husband. The stories link up over time. This summary sticks to the premise; the source doesn't give the ending.

