When bad publicity threatens Zosia's participation in Jac's new stent, she fights to prove herself worthy. But when a loved one needs her help, will Zosia sacrifice her own career to help them? Ready to prove himself the best junior doctor on Keller, Dom is unnerved by a face from his past. Can he keep it together? Bernie struggles to find her place on AAU when an overbearing Serena insists she knows best. But will Jason become a casualty of their spat?

A major train accident gives Dom the perfect opportunity to escape back into work mode. Bernie's husband is fighting dirty in the divorce, turning her children against her. The mother of a young train victim overpowers Bernie with her grief, leading her to confront her own failings as a mother. Zosia's keeping her grief bottled up, but Ollie's there to offer a shoulder to cry on. Is their romance about to be rekindled?