On hot summer nights in New Orleans, a boy named Louis Armstrong would peek under the big swinging doors of Economy Hall and listen to the jazz band. The best night was Friday, when Bunk Johnson would blow his cornet till the roof trembled. At moments like those, Louis could feel his toes tingle. He wanted to be like Bunk Johnson; aim his horn straight up at the night sky and set the stars spinning.
Mama's away one night, and her son can't sleep. He tries to relax by counting stars, but the more of them he sees, the more determined he is to count every single one. Then the boy finds that Daddy can't sleep either. Together, the two of them set off on an unforgettable all-night journey of discovery.