Jughead dresses up as Bippy the Purple Dinosaur for his cousin's birthday party.; Reggie and Archie crash a pajama party that Veronica is having with the girls.; Betty finds a box of "junk" in her closet but each piece reminds her of a special memory from the past.; Betty teaches Miss Grundy that a good auto mechanic is invaluable. Miss Grundy teaches Betty that it isn't improper to profit from your talent. And they both teach Mr. Weatherbee not to underestimate women.; The gang discuss all the problems, and solutions, if the Y2K computer bug crashes computers on January 1st, 2000.; Veronica clashes with a tough-talking new student.; Sabrina's attempts to help the people of Riverdale with her magic go awry, luckily for her.; Veronica might fail her home economics class since she has trouble cooking a gourmet meal for two for only twenty-five dollars.; Veronica's plush tiger rips a seam and she insists it be repaired by her exclusive Parisian seamstress.; Dilton is upset when he doesn't make the football team, but he helps win a game by dressing up as a ram and distracting the other team.; Reggie keeps tricking Archie into making trades that look good on the surface but end up bad for Archie.; Moose wants to run for school president and Dilton is just the guy to help him.; Archie is sick and tired of Betty and Veronica fighting over him. It's enough to make him want to date Cheryl. But their plan to make him want them again backfires.; Harvey helps with a garage sale.; Sabrina and Hilda find a man examining their garbage for an ecology survey.; Jughead explains to Moose how lucky his hat is.; Archie and Jughead follow another car in the fog.