Dr Chris and Dr Xand reveal the amazing type of muscles that help you see... and go for a poo! And they find out what it's like to be the hospital hairdresser when they're faced with cutting real people's hair in Operation Takeover. Dr Chris heads into the woods in search of one of the deadliest creatures on earth, and there are more medical questions to be answered in Ouch and About On Call. Meanwhile, in Accident and Emergency one patient has a sore eye and another heads to surgery to repair a badly broken wrist.

Dr Chris makes Dr Xand cry to demonstrate how your body makes different types of tears to protect your eyes in different ways, and in Operation Takeover they discover just how dangerous it can be out at sea when they join the Lifeboat service. Dr Xand investigates how important our facial expressions are, and the hospital wards are bursting with more medical questions in Ouch and About on Call. Meanwhile over in Accident and Emergency one patient has cut her hand with a craft knife and another needs his gnashers fixing after falling at a skate park.