一只默默無聞的小老鼠，失去家人，可憐兮兮，后來從貓的肚子里救了媽媽，從籠子里救了爸爸，又找回了遠方的姐姐，變成了英雄，可是被問到你是誰家的老鼠，它居然說……

"Kirkus Reviews" The quintessential picture books can't be plotted out or put into any other words; ergo,"Whose mouse are you?/Nobody's mouse./Where is your mother?/Inside a cat./Where is your father?/Caught in a trap..." "But that's all we'll tell you -- "the ending is too good to give away...