Back in college, they attended neighboring schools, and she was rumored to be involved with him. Five years after graduation, they meet again in a café. Who was the culprit behind the case that had gone unsolved for ten years? Now that they've crossed paths again, what story will unfold between them? After the truth behind the cold case comes to light, she chooses to quit her job.
As it turns out, both of them have been hiding their identities. At a celebrity banquet, a race car driver becomes a CEO, and a police officer turns out to be a rich heiress. By the sea at sunset, they gaze at the romantic Milky Way scattered with stars. He is her one and only, the one she cherishes above all others.
