This episode follows staff as they unravel the mystery of an unknown patient who arrives after collapsing and falling face first in the street. The team manage to contact his two daughters as they race to find out what may have caused him to fall unconscious. Twenty-nine-year-old Rick comes to minors after an accident at the gym, and three-year-old Marigold, who has signs of a chest infection, is in paediatrics with her mum Helen.