As night falls on the zoo and the gates close behind the last visitor, a world of adventure stirs to life. Herbert, a keen-eyed inhabitant, quickly discovers the unlocked enclosures. Driven by curiosity, he ventures out, inviting fellow animals like Geoffrey and Ernie to join him. Together, they embark on a delightful exploration of their home after dark. After Dark at the Zoo is a heartwarming tale of friendship and discovery, inviting readers to follow Herbert and his companions on their nocturnal journey, full of sincerity and playful escapades.