From BoardGameGeek:
Story: On 14 July, the national holiday in France, the sheep, chickens and cows are set free in the town of Carcassonne. The children have great fun to catch the animals before dusk.
In Carcassonne Junior, a.k.a. My First Carcassonne, the players in turn draw a landscape tile and place it; unlike in normal Carcassonne, they always match. Amongst other features, the tiles show children in the player colors on the roads. Whenever a road is finished, every player places one of their meeples on each appropriate picture.
The first player who manages to place all of their meeples wins.