Things aren’t going great for Gye-jeol. She gets fired at the hospital she is doing her fellowship and nearly falls when a mysterious man saves her. She falls for him the minute she lays eyes on him, but then he disappears. The man turns out to be Professor Do Jin-woo of the Pilseong Medical Center, who hires her. However, there is something suspicious about him.

Sabrina and Zak, new partners, investigate a pop star’s death threat; they grieve a lost colleague; they disagree as they search for the culprit.

A paranoid biomedical engineer with a case of amnesia comes to Ellis for help leading the team down a trail of conspiracies, corruption and secret codes.

Tess and Sunny join forces with Jake to investigate the murder of an unidentified bride found dead on a desolate beach, still wearing her wedding gown.

Kokdu returns! Gye Jeol realizes that she has feeling for Kokdu as she scours the recycling center for Kokdu’s desk. Kokdu hears from Gaksin that Gye Jeol cried for his presence, and he makes his move. Meanwhile, Kokdu finds out who has been trying to get the better of them.

As the drama continues, breakfast proves to be a wake-up call for the Faithful as the Traitors strike again.

Jack and Kate are still reeling from their fallout in Rome, each trying to suppress their growing feelings. Adding fuel to the fire, Piers steps into his new role as Staff Captain with calculated charm, hoping to rekindle his relationship with Kate.