The special picks up where the first left off, with adult Stan, Kyle, and Cartman attempting to travel back in time to prevent the pandemic and save Kenny.
: Future Randy Marsh sends a specialized strain of marijuana (Tegridy) back to the past. This leads to a revised timeline where the townspeople forgive each other's pandemic-era behaviour, mending the fractured relationships that ruined their futures in the original "bleak" timeline. Deep Dive into Character Arcs South Park: Post Covid: Covid Returns
The "Adult" character payoffs are the special's biggest highlights. The special picks up where the first left