New game called "Disco" - a crazy tennis style game played in teams.
Intertitle reads: "Here's another one that's just growing up - "DISCO" the Crouch End girlies call it".
But it isn't disco as we know it! Shots show four girls playing a kind of doubles tennis match with large bats. Each team has to try and prevent the other from scoring on large discs suspended in the air above the court. It looks pretty easy - no wonder it didn't catch on!