Lizabeth, her brother, and her two neighbors have nothing to do so they decide to go to miss Lottie's house. When they are there they throw rocks at her marigolds which she worked so hard on. At this point in the story, the children are very immature.
Lizabeth is going to bed one night when she hears her parents talking about poverty. They are also talking about how childish and immature Lizabeth and her brother are.
In the middle of the night, Lizabeth wakes up and gets her brother telling him they are going on an adventure. Lizabeth goes to miss Lottie's house and without hesitating destroys Miss Lottie's marigolds. When she sees miss Lottie's face she finally realizes she needs to become more mature and less childish.