It starts with Hefty doing a running jog that, when he finshes, leaves him disiponted when a Smurf tells that he's playing by himself. Hefty Smurf decides to organize games to get the other Smurfs to play sports. When the Smurfs hear the prize is a medal, they don't care (since they already got medals in the King Smurf story), so the prize is changed to a kiss from the Smurfette.