This is a story about a little girl named Marie, and every day when she gets out of school, she would run down to the park and wait for her friends, the letters X, Y, and Z, to show up, but this day, they didn't show up, so she decides to go searching for them. As she starts to look for them, she finds herself not only on an adventure, but she discovers that she is learning a lot about her alphabet. It is a great adventure and learning experience at the same time.