Otto the raven and the elderly human inventor Bartleby live together and are best friends with their neighbor, a young girl named Pippa. They have the best time together until a squirrel named Marla interrupts their routine by stealing peanuts meant for Otto. Soon war erupts between Otto and Marla. Meanwhile Pippa meets a new friend at school and Bartleby works on a new invention. Then an emergency forces Otto and Marla to work together to save Bartleby, and to do this, they must get help from the other animals and get Pippa's attention.