The National Health Service is turning 75, and we are celebrating! In this special episode, Dr Xand discovers a time machine inside the cupboard of everything and embarks upon a journey through time with Mr Grumbles. He finds out what life was like before the NHS, and how its arrival changed the health of people all over the UK. Dr Chris catches up with Ouchers to hear their NHS stories, and Dr Ronx is on a mission to award Ouch Hero medals to thank incredible hospital staff for their service. Happy birthday, NHS!