Jim was a South African railway inspector in the late 1800s who lost his legs in an accident while at work. Unable to perform all his tasks with his disability but desperate to keep his job, Jim discovered a brilliant solution, a baboon named Jack. Jim trained Jack to help him both at home and at the depot. But when the railway authorities and the public discovered a monkey on the job, Jack and Jim had to work together to convince everyone that they made a great team. This inspiring true story celebrates the history of service animals and a devoted friendship.