Following her father's murder, a revenge-driven woman puts her trust in a powerful crime boss — and enters the police force under his direction.

A model high school student who's steeped in a world of serious crime finds his double life upended when a classmate takes an interest in his secret.

A poor, widowed woman, desperate to support her 7-year-old daughter, and a wealthy business executive with a sick mother enter into a contract marriage together.

On-yoo is an adult childhood cancer survivor. When he's not practicing with his boy band, Oh-yoo often volunteers at the hospital's pediatric cancer ward. One day, he recognizes the familiar face of an overdose patient.