The ED is overwhelmed by an influx of teens, while Siobhan worries about the nurses out at a nightclub. Nicole is compromised, and Faith grows suspicious of the paramedics.

Iain and Teddy are exposed to danger from a high-risk patient, while Ngozi battles temptation on a tough shift and Jacob faces a dead end in trying to help his son.

Ngozi hits a new low, Flynn prepares for a drugs crisis, and Iain and Teddy are put to the test.

Patients who have overdosed flood the ED, and Stevie throws herself in at the deep end. Nicole is reunited with somebody from her past, and the fractures widen in the paramedic team.

Iain's career soars to new heights after a daring crane rescue, but will Faith approve? Flynn struggles with his daughters, and can a tense Ngozi and Nicole still work together?