The story is about a boy named Jorgito who becomes very angry at his friend Pedrito for humiliating him in front of his friends. Jorgito tells his father that he wants bad things to happen to Pedrito and even wants him to get sick. His father takes Jorgito to the garden and has him throw pieces of coal at a white shirt hanging on the clothesline, representing throwing bad thoughts at Pedrito. After Jorgito tires himself out throwing coal, his father shows him that he has gotten completely covered in coal from the bad thoughts. The father explains that the bad thoughts Jorgito wished on Pedrito instead came back to dirty him. He teaches Jorgito to be careful of his thoughts