Archie can't shake the feeling that something strange is happening in Riverdale after he and Jughead come across a mysterious lab in the woods. Then it hits Archie: he remembers that lab from childhood-it belongs to the evil Mad Doctor Doom! He also remembers the two children who foiled his plans. Reggie's dog Vader has noticed that while the Superteens often work together, Evilheart (Reggie) enjoys playing practical jokes on Pureheart (Archie). Trying to steer Reggie in the right direction.