Will and Rachael volunteer at the world's largest sanctuary for orphaned rhinos; Emily attempts a life-threatening giraffe relocation, while three warthogs run Emma ragged; Marine biologist Alison finds a new way of dealing with plastic pollution.

Emily has a close call with a lion; Harriet hunts for an elephant; A baby rhino isn't putting on enough weight.

Emma is faced with an emergency patient; Emily has a hard decision to make when a cape buffalo is seriously injured; Anna hopes to help dehorn five white rhinos to make them less valuable to poachers.

Emma looks after Mars the aardvark who demands five-hour walks every night; Josie has her work cut out as an injured vervet monkey is rushed in after being run over; the time has come to dehorn five previously released white rhinos.

Harriet is called out to an emergency operation on an elephant whose leg has been wounded; volunteer Debbie is put to the test as nine orphaned baby monkeys arrive at once, and Emma becomes surrogate mother to three-week-old baby hippo Hector.

Following the vets and volunteers of South Africa who rescue extraordinary animals.