Masaki, a writer for a weekly gossip magazine, encounters a mysterious young woman named Byakuya—brilliant in medicine, yet clueless about the world. He brings her to Takamori General Hospital, where his childhood friend Maria is a doctor. Though Byakuya refuses to reveal her past, it’s clear she’s being hunted—and she’s no ordinary person.

When her medical genius saves Masaki’s sister, he decides to protect her and enlists a detective friend to uncover her identity. Meanwhile, the hospital, plagued by declining trust, launches a new elite unit: the Diagnosis Consultation Team (DCT). Byakuya earns her place by solving a case no one else could.

As she treats patients with groundbreaking insight, she slowly wins over skeptical doctors. With Masaki’s help, she studies patients beyond the hospital walls—and as their bond deepens, he begins to unravel the truth behind her mysterious past.