Cats are natural explorers and often find themselves in tricky and dangerous situations. They may be reputed to have nine lives, but accidents can always happen - sometimes with disastrous consequences. As a result, staff at the RSPCA have their work cut out on a daily basis as they strive to keep Britain's felines out of harm's way. This documentary allows viewers to gain an insight into the work of vets and volunteers, witnesses operations and rehomings, and observes inspectors as they investigate reports of maltreatment.