Mousa is a little boy who just moved to a new town. When it is time for the first day of school, Mousa's mama teaches him about what it means to be nervous. She explains how to think about and overcome this emotion. At school, Mousa meets his teacher and makes new friends. He realizes that trying something new and different isn't so bad after all. This story features characters of different cultural backgrounds, highlighting the fact that despite their differences, all children face the same emotions and challenges as they grow up.