There are new inhabitants in the Eglinton manor with Kevin and Albert coming upon a young Cecily running away from her uncle. Joshua Eglinton claims to Dr. Gordon his niece has a nervous disposition and needs to be kept alone, but Kevin disobeys his father to rescue her. Albert dresses as Cecily allowing Kevin and Black Beauty time to save the young lady from her relative's nefarious intentions.

Kevin and Albert enjoy listening to the tales of Corporal Donovan, who claims to have been in the Light Brigade but Albert has his doubts. When men claiming to be the squire's employees evict Donovan, the boys come to his aid and with Beauty's help uncover stolen goods.