Penny isn't just the fourth little pig - she's an engineer! So when big bad Wolfgang destroys her brothers' homes, Penny comes to the rescue! When Wolfgang returns, Penny must use all her engineering know-how to save her family from his huffing and puffing. The True Story of the Three Little Pigs meets Rosie Revere, Engineer in this clever reimagining of The Three Little Pigs from Cece Loves Science authors Kimberly Derting and Shelli R. Johannes.