In 2035, Song Yang, a top student specializing in AI, is falsely accused of murdering his girlfriend and her daughter. While on the run, he teams up with Ada, an android who has developed self-awareness. Together, they solve a series of mysterious cases and uncover the dark secrets of Cedar Group. Eventually, the truth is revealed, and Song Yang clears his name. Ada sacrifices herself to protect him, and humans and androids enter a new era of coexistence.