Character Arc
Jung Da-eun is a warm, conscientious nurse who transfers from internal medicine to the psychiatric ward, where the pace and the priorities are different from anything she has known. Early on she is eager but uncertain, learning that mental-health care is less about quick fixes and more about patience, attentive listening, and earning trust one conversation at a time. Her instinct to help is genuine, and the ward gives that instinct a deeper and more demanding shape.
Over the season Da-eun grows into a caregiver who can sit with difficulty without flinching, advocating for her patients and treating each of them with dignity. Her relationships with colleagues and with the people she cares for teach her that empathy is a skill that can be practiced and that small daily acts of kindness matter. The series is careful to portray her work and her patients without sensationalism, keeping the focus on recovery and human connection.
Da-eun's arc is also about learning to care for herself. As she carries the emotional weight of the ward, she comes to understand that caregivers need support too, and that acknowledging one's own limits is part of staying well. Her quiet bonds with Dong Go-yun and Song Yu-chan give her steadiness, and by the end she embodies the show's gentle central idea that struggling is human and getting better is possible.