When Veronica doesn't get her grades up her parents prevent her from attending the class trip to London.; Sabrina wishes for a Party Patty doll for Christmas and accidentally causes one to come alive.; Not knowing what to get Veronica for Christmas, Betty decides to offer to be her "Elf for a day" and do her Christmas chores.; Betty and Veronica agree to split time with Archie in Christmas Eve so he can be with both of them.; A European Prince asks Josie to marry him and won't take 'no' for an answer.; Melody feels that she's the least popular of the Pussycats, so decides she should quit the band. Alex and the other girls convince her to change her mind.; Betty and her friends, calling themselves The Green Girls, help institute a new policy at the school to save energy.; Ginger starts a trend of wearing a picture of your love on a t-shirt. It means big trouble for Archie when he has to wear one.; Chuck convinces Betty to write a letter to her favorite author.; Spooky grants Sabrina a wish for her birthday.; Betty's mom is trying on an old outfit she bought as a teenager.; Betty can't sleep because she keeps dreaming of monsters.; Mr. Lodge asks Veronica if she ever thinks of anything besides mall shopping.; Betty is bell-ringing for the holidays.; Veronica loves everything about snowboarding except snowboarding itself.; Betty finds out Archie used a computerized pen to take his math test.