The air ambulance is dispatched to collect Frances, an 80-year-old woman who fell three metres into her empty swimming pool while gardening, and has sustained a head wound that could have resulted in a life-altering bleed on the brain. Ruth, aged 86, arrives at St George's A&E with her heart beating three times faster than the normal rate. Doctors are concerned it may not be pumping enough blood around her body, and quickly prescribe fast-acting medication. Plus, students Jerry and Sakille turn up at the hospital after Jerry crashed her car on the way home from a party. While Jerry stayed sober to serve as the designated driver, she concludes that balancing a full-time job with her studies and a hectic social life might not be a sensible idea