"The Last Kids on Earth" is a popular book series created by Max Brallier that follows a group of kids navigating a post-apocalyptic world filled with monsters and zombies. The story centers on Jack Sullivan and his friends as they use their creativity and teamwork to survive and have fun in a world turned upside down. The series has been adapted into an animated TV show on Netflix, bringing the characters and their adventures to life. The show captures the humor and excitement of the books, appealing to both children and families with its engaging storytelling and vibrant animation.