A young Supergirl fan faces her most elusive adversary - sleep! As darkness falls, a young girl attempts to catch some Z's while DC Comics' Supergirl tracks down an elusive enemy. With super hero traits, like bravery, patience, and persistence, they'll both turn sleepless nights into sweet success and sweet dreams. Along with Omar Lozano's action-packed art, bestselling author Michael Dahl delivers an imaginative bedtime book for fangirls and fanboys alike.