Complex sentence: But one day, when the police commissioner's young daughter dies in a strange accident, Yong-gu who happens to find her is falsely accused and sentenced to death for abduction, sexual assault, and murder of a minor.
Split into simpler sentences: But one day, when the police commissioner's young daughter dies in a strange accident, Yong-gu is the one who happens to find her. He is falsely accused and sentenced to death for abduction, sexual assault, and murder of a minor.