Meet the Walnut Animal Society. Their mission is “to create and to always remain curious.” Henry, the founding member, is an inventor and tinkerer who one day loses something. He loses an idea! After searching high and low and without any luck, he decides to go for a walk with Eleanor. They meander through the forest and with night donning and Henry about to lose hope, he runs into some unlikely friends who play a part in helping him solve his problem.