Derrick and Henry travel to Texas to help neighbors Monica and Robert with a cow and a dog, both named Penelope. Penelope the cow needs a boot to graze freely, while Penelope the dog has severe nerve damage and can't control her back legs.

Derrick travels to Savannah, Georgia to help a war hero and his service dog, Gunner. After losing his front paw to cancer, Gunner has not been able to perform his duties as a service dog. Derrick builds a prosthetic limb that will get Gunner walking