Cal and Ethan plan to travel to Finland, to help a patient take part in a potentially life-saving clinical trial. However, they soon find themselves entangled in a wider family crisis involving a son who is unable to come to terms with the seriousness of his mother's illness. Meanwhile, Zoe tries to connect with the victim of a car accident who seems to be unable to speak, Dylan's successes as the clinical lead are brought to an abrupt end when Connie takes back the role, and Zoe decides to move into a flat with Max after growing weary of life with the gang