The second season is followed by new events through those remnants of the cleansing night. The night of the cleansing may have affected the lives of Ryan and Marcus. There are four interconnected characters following the controversial process over the following year. The city is cleaning up disastrous purges of the period.
Yes, we got subjected to another round of kill or be killed on Purge night, but the promise of The Purge Season 2 Episode 1 is that with another 364 days to go before the commencement of the next Purge, we're in unfamiliar territory.