Bei bao li zhuang le sheng me?

Frog carries his bag and rushed. What's in frog's bag? Animals are full of curiosity and expectations. Squirrel guesses that inside of his bag must be acorns, because squirrel's favorite food is acorns. Rabbit guesses that inside of his bag must be carrots, because rabbit's favorite food is carrots. Squirrels, monkeys, bears, rabbits chase after frog to find out what's in his bag.