An Yi (Yiran Zhou) is an assistant architect working in Beijing, China. Lonely Gao Ang (Po-Yu Shih) works as a piano financier in Germany. One day, a bizarre accident somehow turns their waves on. Even though they've never met, suddenly they can communicate telepathically. In addition, they feel the same sensations as each other. A bond begins to form between them. But what happens when the connection is threatened? Will they be able to get back to being "alone" in their own heads again?