"No Tell Motel" is the first episode of the eighth season of Happy Days.
Joanie and Chachi sneak off without permission to a Beach Boys concert in Chicago, but they get in over their heads when Chachi's car breaks down and they get stuck in a motel together.
Note: First appearance of Cathy Silvers as Jenny Piccalo, Joanie's boy-crazy best friend, who had only been referred to in prior seasons. She was introduced onscreen to help build up Joanie's role after Richie left.