Join Doc as she goes from running her backyard clinic to taking charge of a new, state-of-the art toy hospital. The excitement begins when Doc is transported to McStuffinsville, a magical new place filled with toys. There, she becomes the new Chief Resident of McStuffins Toy Hospital. Thankfully, she's brought the whole gang to pitch in, with Lambie in the nursery, Stuffy on vet duty, Chilly as receptionist, Rosie the ambulance and, of course, Hallie too.