The series is defined by massive twists. Season 1 reveals that Clifford Blossom murdered his own son, Jason, to protect his drug-smuggling business. Season 2 introduces the Black Hood, revealed to be Betty's father, Hal Cooper. Season 3 features the Gargoyle King and "Gryphons & Gargoyles," a game that turns out to be a decades-old tool of manipulation by Penelope Blossom. Season 5 features a seven-year time jump where the characters return to save the town from Hiram Lodge, who eventually dies after being exiled.
The biggest turn occurs at the end of Season 6, when a comet sent by the villainous Percival Pickens is stopped by Cheryl's powers, but the resulting magical fallout sends everyone back to 1955 with their memories wiped. In the series finale, it is revealed that everyone eventually died of natural causes after living full lives in the new timeline. Betty is the last to pass away at age 86, reuniting with her friends in a "Sweet Hereafter" version of Pop's Diner, confirming they are all finally at peace in a timeless version of their youth.