There's a big bang in this episode as the doctors reveal the amazing piece of body kit that helps your ears to pop, and in Operation Takeover they find out just how tough it is to be dentists when they have to perform their first ever filling. Dr Xand meets Grace and her amazing assistance dog Scooby and Ouch and About on Call hits the wards to answer patients' medical questions. Meanwhile, in accident and emergency, one patient comes in with a cut head, and another is treated for nonstop nosebleeds.