After being visited by a mysterious figure who arrives in Rivervale, the gang find themselves faced with unexpected ultimatums.

Archie and the gang gather intel about Percival so they can better understand where he came from and use that to their advantage. However, when their plan results in an unexpected outcome, the gang is left having to pay a terrible cost.

When Archie and Veronica's attempt to negotiate with Percival doesn't go as planned, the forces of good and evil finally face off, leading to some unexpected revelations.