Nine-year-old Bear is set on having a critter as a pet. After failed attempts to adopt beetles and snails, he has to settle for a book with pictures of bugs. This is a great opportunity for him to annoy his little sister, Penelope, who is afraid of bugs. When his parents decide to bring home a cat to help Penelope with her nightmares, Bear helps Kitty find her wild side. As a consequence, Penelope’s nightmares get even worse! Over-tired Mom is about to give in on the snake debate, which seems to be a perfect solution for all, but Bear has other plans...