Budget cuts to Riverdale High have the students pitching ideas on how to save the school money in 'The Challenge.' But with the school in financial crisis, how will Betty manage to write a comedy about school life? Or is her class project the key solution? Plus: Archie attempts to beat the holiday rush in 'Holiday Hassle', and Jughead gives the gift of holiday cooking to Riverdale High's lonely chef in 'Now You're Cooking!'