After graduating from Riverdale High, Ethel Muggs couldn't get away from her hometown - and onto her chosen career path - fast enough. When the Mayor of Riverdale pays her handsomely to write a history of the city, she can't wait to return to take down Archie, Jughead, Betty, Veronica, and all the other Riverdale natives who made her life hell all those years ago. The only thing she forgets to consider is... maybe they've all changed, too.